Added documentation

author: Camil Staps 2015-02-07 21:06:17 +0100
committer: Camil Staps 2015-02-07 21:06:17 +0100
commit: 29955216d69ca08b69afe1ace71151839049c045 (patch)
tree: 48a085e24cf1e65677bbace195017f118292ecc2 /docs/files
parent: Added some documentation; added Makefile for generating docs with phpdoc (diff)
18 files changed, 4899 insertions, 0 deletions
diff --git a/docs/files/BusinessAdmin.class.html b/docs/files/BusinessAdmin.class.html
new file mode 100644
index 0000000..e4ca958
--- /dev/null
+++ b/docs/files/BusinessAdmin.class.html
@@ -0,0 +1,280 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"/>
+    <meta charset="utf-8"/>
+    <title>API Documentation</title>
+    <meta name="author" content=""/>
+    <meta name="description" content=""/>
+
+    <link href="../css/bootstrap-combined.no-icons.min.css" rel="stylesheet">
+    <link href="../css/font-awesome.min.css" rel="stylesheet">
+    <link href="../css/prism.css" rel="stylesheet" media="all"/>
+    <link href="../css/template.css" rel="stylesheet" media="all"/>
+    
+    <!--[if lt IE 9]>
+    <script src="../js/html5.js"></script>
+    <![endif]-->
+    <script src="../js/jquery-1.11.0.min.js"></script>
+    <script src="../js/ui/1.10.4/jquery-ui.min.js"></script>
+    <script src="../js/bootstrap.min.js"></script>
+    <script src="../js/jquery.smooth-scroll.js"></script>
+    <script src="../js/prism.min.js"></script>
+    <!-- TODO: Add http://jscrollpane.kelvinluck.com/ to style the scrollbars for browsers not using webkit-->
+        <script type="text/javascript">
+        function loadExternalCodeSnippets() {
+            Array.prototype.slice.call(document.querySelectorAll('pre[data-src]')).forEach(function (pre) {
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+                var extension = (src.match(/\.(\w+)$/) || [, ''])[1];
+                var language = 'php';
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+                            code.textContent = xhr.responseText;
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+                            code.textContent = '✖ Error: File does not exist or is empty';
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+                };
+
+                xhr.send(null);
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+            loadExternalCodeSnippets();
+        });
+        $('#source-view').on('shown', function () {
+            loadExternalCodeSnippets();
+        })
+    </script>
+
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+</head>
+<body>
+
+<div class="navbar navbar-fixed-top">
+    <div class="navbar-inner">
+        <div class="container">
+            <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
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+            </a>
+            <a class="brand" href="../index.html">API Documentation</a>
+
+            <div class="nav-collapse">
+                <ul class="nav pull-right">
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+                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
+                            Charts <b class="caret"></b>
+                        </a>
+                        <ul class="dropdown-menu">
+                            <li>
+                                <a href="../graphs/class.html">
+                                    <i class="icon-list-alt"></i>&#160;Class hierarchy diagram
+                                </a>
+                            </li>
+                        </ul>
+                    </li>
+                    <li class="dropdown" id="reports-menu">
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+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        <i class="icon-list-alt"></i>&#160;Errors <span class="label label-info pull-right">50</span>
+                                </a>
+                            </li>
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+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        <i class="icon-list-alt"></i>&#160;Markers <span class="label label-info pull-right">1</span>
+                                </a>
+                            </li>
+                            <li>
+                                <a href="../reports/deprecated.html">
+                                                                                                            <i class="icon-list-alt"></i>&#160;Deprecated <span class="label label-info pull-right">0</span>
+                                </a>
+                            </li>
+                        </ul>
+                    </li>
+                </ul>
+            </div>
+        </div>
+    </div>
+    <!--<div class="go_to_top">-->
+    <!--<a href="#___" style="color: inherit">Back to top&#160;&#160;<i class="icon-upload icon-white"></i></a>-->
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+</div>
+
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+        <section class="row-fluid">
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+                                <a href="../namespaces/default.html" style="margin-left: 30px; padding-left: 0">\</a>
+            </div>
+            <div id="namespace-2048145480" class="accordion-body collapse in">
+                <div class="accordion-inner">
+
+                    
+                    <ul>
+                                                                                                    <li class="class"><a href="../classes/assignment.html">assignment</a></li>
+                                                    <li class="class"><a href="../classes/BusinessAdmin.html">BusinessAdmin</a></li>
+                                                    <li class="class"><a href="../classes/client.html">client</a></li>
+                                                    <li class="class"><a href="../classes/constants.html">constants</a></li>
+                                                    <li class="class"><a href="../classes/contact.html">contact</a></li>
+                                                    <li class="class"><a href="../classes/correspondence.html">correspondence</a></li>
+                                                    <li class="class"><a href="../classes/file.html">file</a></li>
+                                                    <li class="class"><a href="../classes/offer.html">offer</a></li>
+                                                    <li class="class"><a href="../classes/response.html">response</a></li>
+                                            </ul>
+                </div>
+            </div>
+        </div>
+    </div>
+
+        </div>
+    </section>
+    <section class="row-fluid">
+        <div class="span10 offset2">
+            <div class="row-fluid">
+                <div class="span8 content file">
+                    <nav>
+                                                                    </nav>
+
+                    <a href="#source-view" role="button" class="pull-right btn" data-toggle="modal"><i class="icon-code"></i></a>
+                    <h1><small></small>BusinessAdmin.class.php</h1>
+                    <p><em>This file provides the BusinessAdmin class</em></p>
+                    
+
+                    
+                    
+                                        <h2>Classes</h2>
+                    <table class="table table-hover">
+                                            <tr>
+                            <td><a href="../classes/BusinessAdmin.html">BusinessAdmin</a></td>
+                            <td><em>Provides basic functions like adding elements to the database</em></td>
+                        </tr>
+                                        </table>
+                                    </div>
+
+                <aside class="span4 detailsbar">
+                    <dl>
+                                                    <dt>Package</dt>
+                            <dd><div class="namespace-wrapper">\Default</div></dd>
+                        
+                        
+                    </dl>
+                    <h2>Tags</h2>
+                    <table class="table table-condensed">
+                                                    <tr>
+                                <th>
+                                    author
+                                </th>
+                                <td>
+                                                                            <p>Camil Staps</p>
+<p>BusinessAdmin: administrative software for small companies
+Copyright (C) 2015 Camil Staps (ViviSoft)</p>
+<p>This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.</p>
+<p>This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.</p>
+<p>You should have received a copy of the GNU General Public License
+along with this program.  If not, see <a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>.</p>
+                                                                    </td>
+                            </tr>
+                                            </table>
+
+                </aside>
+            </div>
+
+            
+            
+        </div>
+    </section>
+
+    <div id="source-view" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="source-view-label" aria-hidden="true">
+        <div class="modal-header">
+            <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
+            <h3 id="source-view-label"></h3>
+        </div>
+        <div class="modal-body">
+            <pre data-src="../files/BusinessAdmin.class.php.txt" class="language-php line-numbers"></pre>
+        </div>
+    </div>
+
+    <footer class="row-fluid">
+        <section class="span10 offset2">
+            <section class="row-fluid">
+                <section class="span10 offset1">
+                    <section class="row-fluid footer-sections">
+                        <section class="span4">
+                                                        <h1><i class="icon-code"></i></h1>
+                            <div>
+                                <ul>
+                                                                    </ul>
+                            </div>
+                        </section>
+                        <section class="span4">
+                                                        <h1><i class="icon-bar-chart"></i></h1>
+                            <div>
+                                <ul>
+                                    <li><a href="../graphs/class.html">Class Hierarchy Diagram</a></li>
+                                </ul>
+                            </div>
+                        </section>
+                        <section class="span4">
+                                                        <h1><i class="icon-pushpin"></i></h1>
+                            <div>
+                                <ul>
+                                    <li><a href="../reports/errors.html">Errors</a></li>
+                                    <li><a href="../reports/markers.html">Markers</a></li>
+                                </ul>
+                            </div>
+                        </section>
+                    </section>
+                </section>
+            </section>
+            <section class="row-fluid">
+                <section class="span10 offset1">
+                    <hr />
+                    Documentation is powered by <a href="http://www.phpdoc.org/">phpDocumentor </a> and authored
+                    on February 7th, 2015 at 21:04.
+                </section>
+            </section>
+        </section>
+    </footer>
+</div>
+
+</body>
+</html>
diff --git a/docs/files/BusinessAdmin.class.php.txt b/docs/files/BusinessAdmin.class.php.txt
new file mode 100644
index 0000000..7efedd2
--- /dev/null
+++ b/docs/files/BusinessAdmin.class.php.txt
@@ -0,0 +1,282 @@
+<?php
+/**
+ * This file provides the BusinessAdmin class
+ * 
+ * @author Camil Staps
+ * 
+ * BusinessAdmin: administrative software for small companies
+ * Copyright (C) 2015 Camil Staps (ViviSoft)
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * Provides basic functions like adding elements to the database
+ */
+class BusinessAdmin {
+    //------------------------------------------------------------------------------
+    // Getters and setters
+    //------------------------------------------------------------------------------
+
+    /**
+     * Get all client ids
+     * 
+     * @see BusinessAdmin::getClients()       This funtion returns instances of the client class instead of just the ids
+     * 
+     * @param PDO $pdo                        The PDO class for database connection
+     * 
+     * @throws PDOException                   Is something went wrong with the database
+     * 
+     * @return int[]                          The ids
+     */
+    public static function getClientIds($pdo) {
+        $ids = array();
+        $clients = $pdo->query("SELECT `id` FROM `".constants::db_prefix."client`")->fetchAll(PDO::FETCH_ASSOC);
+        foreach ($clients as $client) {
+            $ids[] = $client['id'];
+        }
+        return $ids;
+    }
+
+    /**
+     * Get all clients
+     * 
+     * @see BusinessAdmin::getClientIds()     This function returns just the ids of the clients, and not instances of the client class
+     * 
+     * @param PDO $pdo                        The PDO class for database connection
+     * 
+     * @throws PDOException                   If something went wrong with the database
+     * 
+     * @return client[]                       An array indexed by id of instances of the client class
+     */
+    public static function getClients($pdo) {
+        $ids = self::getClientIds($pdo);
+        $clients = array();
+        foreach ($ids as $id) {
+            $clients[$id] = new client($pdo, $id);
+        }
+        return $clients;
+    }
+
+    /**
+     * Get all contact ids
+     * 
+     * @see BusinessAdmin::getContacts()      This funtion returns instances of the contact class instead of just the ids
+     * 
+     * @param PDO $pdo                        The PDO class for database connection
+     * 
+     * @throws PDOException                   Is something went wrong with the database
+     * 
+     * @return int[]                          The ids
+     */
+    public static function getContactIds($pdo) {
+        $ids = array();
+        $contacts = $pdo->query("SELECT `id` FROM `".constants::db_prefix."contact`")->fetchAll(PDO::FETCH_ASSOC);
+        foreach ($contacts as $contact) {
+            $ids[] = $contact['id'];
+        }
+        return $ids;
+    }
+
+    /**
+     * Get all contacts
+     * 
+     * @see BusinessAdmin::getContactIds()    This function returns just the ids of the contacts, and not instances of the contact class
+     * 
+     * @param PDO $pdo                        The PDO class for database connection
+     * 
+     * @throws PDOException                   If something went wrong with the database
+     * 
+     * @return contact[]                      An array indexed by id of instances of the contact class
+     */
+    public static function getContacts($pdo) {
+        $ids = self::getContactIds($pdo);
+        $contacts = array();
+        foreach ($ids as $id) {
+            $contacts[$id] = new contact($pdo, $id);
+        }
+        return $contacts;
+    }
+
+    /**
+     * Get all offer ids
+     * 
+     * @see BusinessAdmin::getOffers()        This funtion returns instances of the offer class instead of just the ids
+     * 
+     * @param PDO $pdo                        The PDO class for database connection
+     * @param string[] $where                 An array of WHERE clauses that will be AND-ed
+     * 
+     * @throws PDOException                   Is something went wrong with the database
+     * 
+     * @return int[]                          The ids
+     */
+    public static function getOfferIds($pdo, $where = array()) {
+        $ids = array();
+        $offers = $pdo->query("SELECT `id` FROM `".constants::db_prefix."offer`" . ((count($where) > 0) ? (" WHERE (" . implode(') AND (', $where) . ")") : ""))->fetchAll(PDO::FETCH_ASSOC);
+        foreach ($offers as $offer) {
+            $ids[] = $offer['id'];
+        }
+        return $ids;
+    }
+
+    /**
+     * Get all offers
+     * 
+     * @see BusinessAdmin::getOfferIds()      This function returns just the ids of the offers, and not instances of the offer class
+     * 
+     * @param PDO $pdo                        The PDO class for database connection
+     * @param string[] $where                 An array of WHERE clauses that will be AND-ed
+     * 
+     * @throws PDOException                   If something went wrong with the database
+     * 
+     * @return offer[]                        An array indexed by id of instances of the offer class
+     */
+    public static function getOffers($pdo, $where = array()) {
+        $ids = self::getOfferIds($pdo, $where);
+        $offers = array();
+        foreach ($ids as $id) {
+            $offers[$id] = new offer($pdo, $id);
+        }
+        return $offers;
+    }
+
+    /**
+     * Get all assignment ids
+     * 
+     * @see BusinessAdmin::getAssignments()   This funtion returns instances of the assignment class instead of just the ids
+     * 
+     * @param PDO $pdo                        The PDO class for database connection
+     * 
+     * @throws PDOException                   Is something went wrong with the database
+     * 
+     * @return int[]                          The ids
+     */
+    public static function getAssignmentIds($pdo) {
+        $ids = array();
+        $assignments = $pdo->query("SELECT `id` FROM `".constants::db_prefix."assignment`")->fetchAll(PDO::FETCH_ASSOC);
+        foreach ($assignments as $assignment) {
+            $ids[] = $assignment['id'];
+        }
+        return $ids;
+    }
+
+    /**
+     * Get all assignments
+     * 
+     * @see BusinessAdmin::getAssignmentIds() This function returns just the ids of the assignments, and not instances of the assignment class
+     * 
+     * @param PDO $pdo                        The PDO class for database connection
+     * 
+     * @throws PDOException                   If something went wrong with the database
+     * 
+     * @return assignment[]                   An array indexed by id of instances of the assignment class
+     */
+    public static function getAssignments($pdo) {
+        $ids = self::getAssignmentIds($pdo);
+        $assignments = array();
+        foreach ($ids as $id) {
+            $assignments[$id] = new assignment($pdo, $id);
+        }
+        return $assignments;
+    }
+
+    //------------------------------------------------------------------------------
+    // Other functions
+    //------------------------------------------------------------------------------
+
+    /**
+     * Create a new client
+     * 
+     * @param PDO $pdo                        The database connection
+     * @param string $name                    The name for the new client
+     * 
+     * @throws PDOException                   If something went wrong with the database
+     * 
+     * @return client|bool                    A new instance of the client object, or false on failure
+     */
+    public static function createClient($pdo, $name) {
+        $stmt = $pdo->prepare("INSERT INTO `".constants::db_prefix."client` (`name`) VALUES (?)");
+        $stmt->execute(array($name));
+        if ($stmt->rowCount() == 1) {
+            return new client($pdo, $pdo->lastInsertId());
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Create a new file
+     * 
+     * @param PDO $pdo                        The database connection
+     * @param string $filename                The desired filename
+     * 
+     * @throws PDOException                   If something went wrong with the database
+     * @throws Exception                      If the file could not be created (due to permissions, file existed already, etc.), or the database record couldn't be added
+     * 
+     * @return file                           A new instance of the file object
+     */
+    public static function createFile($pdo, $filename) {
+        // Check for file existence
+        if (file_exists(constants::files_folder . $filename)) {
+            throw new Exception("$filename already exists.");
+        }
+
+        // Try to create the file
+        if (file_put_contents(constants::files_folder . $filename, '') === false) {
+            throw new Exception("$filename could not be created. Check the permissions.");
+        }
+
+        $stmt = $pdo->prepare("INSERT INTO `".constants::db_prefix."file` (`filename`) VALUES (?)");
+        $stmt->execute(array($filename));
+        if ($stmt->rowCount() == 1) {
+            return new file($pdo, $pdo->lastInsertId());
+        } else {
+            unlink(constants::files_folder . $filename);
+            throw new Exception("$filename could not be added to the database");
+        }
+    }
+
+    /**
+     * Format a date nicely
+     * 
+     * @todo implement $relatively = true
+     * 
+     * @param int $timestamp                  The UNIX timestamp to format
+     * @param bool $with_time                 If false, only the date is returned; if false, also the time
+     * @param bool $full_date                 If true, a year will be outputted even if the date is in the current year
+     * @param bool $relatively                Whether or not to show the date relatively (e.g. '1 day ago') (NOT IMPLEMENTED YET)
+     * 
+     * @return string The formatted date
+     */
+    public static function formatDate($timestamp, $with_time = true, $full_date = false, $relatively = false) {
+        $output = '';
+        if (date('Y', $timestamp) == 1970) {
+            return 'never';
+        }
+        if (date('d/m/Y') == date('d/m/Y', $timestamp)) {
+            return 'today';
+        }
+        if (date('Y') != date('Y', $timestamp) || $full_date) {
+            $output .= date('Y-', $timestamp);
+        }
+        if (date('d/m/Y') != date('d/m/Y', $timestamp) || $full_date) {
+            $output .= date('m-d', $timestamp);
+        }
+        if ($with_time) {
+            $output .= date(' H:i', $timestamp);
+        }
+
+        return $output;
+    }
+}
diff --git a/docs/files/assignment.class.html b/docs/files/assignment.class.html
new file mode 100644
index 0000000..b7eb5c4
--- /dev/null
+++ b/docs/files/assignment.class.html
@@ -0,0 +1,280 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"/>
+    <meta charset="utf-8"/>
+    <title>API Documentation</title>
+    <meta name="author" content=""/>
+    <meta name="description" content=""/>
+
+    <link href="../css/bootstrap-combined.no-icons.min.css" rel="stylesheet">
+    <link href="../css/font-awesome.min.css" rel="stylesheet">
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+    <link href="../css/template.css" rel="stylesheet" media="all"/>
+    
+    <!--[if lt IE 9]>
+    <script src="../js/html5.js"></script>
+    <![endif]-->
+    <script src="../js/jquery-1.11.0.min.js"></script>
+    <script src="../js/ui/1.10.4/jquery-ui.min.js"></script>
+    <script src="../js/bootstrap.min.js"></script>
+    <script src="../js/jquery.smooth-scroll.js"></script>
+    <script src="../js/prism.min.js"></script>
+    <!-- TODO: Add http://jscrollpane.kelvinluck.com/ to style the scrollbars for browsers not using webkit-->
+        <script type="text/javascript">
+        function loadExternalCodeSnippets() {
+            Array.prototype.slice.call(document.querySelectorAll('pre[data-src]')).forEach(function (pre) {
+                var src = pre.getAttribute('data-src');
+                var extension = (src.match(/\.(\w+)$/) || [, ''])[1];
+                var language = 'php';
+
+                var code = document.createElement('code');
+                code.className = 'language-' + language;
+
+                pre.textContent = '';
+
+                code.textContent = 'Loading…';
+
+                pre.appendChild(code);
+
+                var xhr = new XMLHttpRequest();
+
+                xhr.open('GET', src, true);
+
+                xhr.onreadystatechange = function () {
+                    if (xhr.readyState == 4) {
+
+                        if (xhr.status < 400 && xhr.responseText) {
+                            code.textContent = xhr.responseText;
+
+                            Prism.highlightElement(code);
+                        }
+                        else if (xhr.status >= 400) {
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+                            </li>
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+                            </li>
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+                                                    <li class="class"><a href="../classes/BusinessAdmin.html">BusinessAdmin</a></li>
+                                                    <li class="class"><a href="../classes/client.html">client</a></li>
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+
+                    <a href="#source-view" role="button" class="pull-right btn" data-toggle="modal"><i class="icon-code"></i></a>
+                    <h1><small></small>assignment.class.php</h1>
+                    <p><em>Provides the assignment class, an interface to the assignment table in the database</em></p>
+                    
+
+                    
+                    
+                                        <h2>Classes</h2>
+                    <table class="table table-hover">
+                                            <tr>
+                            <td><a href="../classes/assignment.html">assignment</a></td>
+                            <td><em>An interface to the assignment table in the database</em></td>
+                        </tr>
+                                        </table>
+                                    </div>
+
+                <aside class="span4 detailsbar">
+                    <dl>
+                                                    <dt>Package</dt>
+                            <dd><div class="namespace-wrapper">\Default</div></dd>
+                        
+                        
+                    </dl>
+                    <h2>Tags</h2>
+                    <table class="table table-condensed">
+                                                    <tr>
+                                <th>
+                                    author
+                                </th>
+                                <td>
+                                                                            <p>Camil Staps</p>
+<p>BusinessAdmin: administrative software for small companies
+Copyright (C) 2015 Camil Staps (ViviSoft)</p>
+<p>This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.</p>
+<p>This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.</p>
+<p>You should have received a copy of the GNU General Public License
+along with this program.  If not, see <a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>.</p>
+                                                                    </td>
+                            </tr>
+                                            </table>
+
+                </aside>
+            </div>
+
+            
+            
+        </div>
+    </section>
+
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+            <h3 id="source-view-label"></h3>
+        </div>
+        <div class="modal-body">
+            <pre data-src="../files/assignment.class.php.txt" class="language-php line-numbers"></pre>
+        </div>
+    </div>
+
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+        <section class="span10 offset2">
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+                                                        <h1><i class="icon-code"></i></h1>
+                            <div>
+                                <ul>
+                                                                    </ul>
+                            </div>
+                        </section>
+                        <section class="span4">
+                                                        <h1><i class="icon-bar-chart"></i></h1>
+                            <div>
+                                <ul>
+                                    <li><a href="../graphs/class.html">Class Hierarchy Diagram</a></li>
+                                </ul>
+                            </div>
+                        </section>
+                        <section class="span4">
+                                                        <h1><i class="icon-pushpin"></i></h1>
+                            <div>
+                                <ul>
+                                    <li><a href="../reports/errors.html">Errors</a></li>
+                                    <li><a href="../reports/markers.html">Markers</a></li>
+                                </ul>
+                            </div>
+                        </section>
+                    </section>
+                </section>
+            </section>
+            <section class="row-fluid">
+                <section class="span10 offset1">
+                    <hr />
+                    Documentation is powered by <a href="http://www.phpdoc.org/">phpDocumentor </a> and authored
+                    on February 7th, 2015 at 21:04.
+                </section>
+            </section>
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+</html>
diff --git a/docs/files/assignment.class.php.txt b/docs/files/assignment.class.php.txt
new file mode 100644
index 0000000..cafba65
--- /dev/null
+++ b/docs/files/assignment.class.php.txt
@@ -0,0 +1,316 @@
+<?php
+/**
+ * Provides the assignment class, an interface to the assignment table in the database
+ * 
+ * @author Camil Staps
+ * 
+ * BusinessAdmin: administrative software for small companies
+ * Copyright (C) 2015 Camil Staps (ViviSoft)
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * An interface to the assignment table in the database
+ */
+class assignment {
+    /**
+     * @var pdo $pdo                The PDO class for database communication
+     * @var int $id                 The id of the assignment
+     * @var int $offerId            The id of the offer this assignment is linked to
+     * @var string $title           The title of the assignment
+     * @var string $description     The description of the assignment
+     * @var int $hours              The amount of hours of the assignment
+     * @var float $price_per_hour   The price per hour for this assignment, in your valuta
+     * @var float $vat              The percentage of VAT to calculate on this assignment
+     */
+    protected $pdo, $offerId, $id, $title, $description, $hours, $price_per_hour, $vat;
+
+    const SUBTOTAL = 1;
+    const VAT = 2;
+    const TOTAL = 3;
+
+    /**
+     * Create a new instance
+     * 
+     * @param PDO $pdo              The PDO class, to access the database
+     * @param int $id               The id of the assignment to fetch
+     * 
+     * @throws PDOException         If something went wrong with the database
+     * @throws Exception            If the assignment could not be found
+     */
+    public function __construct($pdo, $id) {
+        $this->pdo = $pdo;
+
+        $stmt = $this->pdo->prepare("SELECT * FROM `".constants::db_prefix."assignment` WHERE `id`=?");
+        $stmt->execute(array($id));
+        if ($stmt->rowCount() == 0) {
+            throw new Exception("The assignment with id '$id' could not be found.");
+        }
+        $assignment = $stmt->fetch(PDO::FETCH_ASSOC);
+
+        $this->id = $assignment['id'];
+        $this->offerId = $assignment['offerId'];
+        $this->title = $assignment['title'];
+        $this->description = $assignment['description'];
+        $this->hours = $assignment['hours'];
+        $this->price_per_hour = $assignment['price_per_hour'];
+        $this->vat = $assignment['VAT_percentage'];
+    }
+
+    //------------------------------------------------------------------------------
+    // Getters and setters
+    //------------------------------------------------------------------------------
+
+    /**
+     * Get the ID of the assignment
+     * 
+     * @return int                  The ID
+     */
+    public function getId() {
+        return $this->id;
+    }
+
+    /**
+     * Get the ID of the offer that this assignment is linked to
+     * 
+     * @return int                  The ID
+     */
+    public function getOfferId() {
+        return $this->offerId;
+    }
+
+    /**
+     * Get the offer that this assignment is linked to
+     * 
+     * @return offer                The offer
+     */
+    public function getOffer() {
+        return new offer($this->pdo, $this->offerId);
+    }
+
+    /**
+     * Get the title of the assignment
+     * 
+     * @return string               The title
+     */
+    public function getTitle() {
+        return $this->title;
+    }
+
+    /**
+     * Set the title of the assignment
+     * 
+     * @param string $title          The new title for the assignment
+     * 
+     * @throws PDOException          If something went wrong with the database
+     * 
+     * @return bool                  True on succes, false on failure
+     */
+    public function setTitle($title) {
+        $stmt = $this->pdo->prepare("UPDATE `".constants::db_prefix."assignment` SET `title`=? WHERE `id`=?");
+        $stmt->execute(array($title, $this->id));
+        if ($stmt->rowCount() == 1) {
+            $this->title = $title;
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Get the description of the assignment
+     * 
+     * @param bool $parseMarkdown    Whether or not to parse markdown
+     * 
+     * @return string                The description
+     */
+    public function getDescription($parseMarkdown = true) {
+        if ($parseMarkdown) {
+            $pd = new Parsedown;
+            return $pd->text($this->description);
+        } else {
+            return $this->description;
+        }
+    }
+
+    /**
+     * Set the description of the assignment
+     * 
+     * @param string $description    The new description for the assignment
+     * 
+     * @throws PDOException          If something went wrong with the database
+     * 
+     * @return bool                  True on succes, false on failure
+     */
+    public function setDescription($description) {
+        $stmt = $this->pdo->prepare("UPDATE `".constants::db_prefix."assignment` SET `description`=? WHERE `id`=?");
+        $stmt->execute(array($description, $this->id));
+        if ($stmt->rowCount() == 1) {
+            $this->description = $description;
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Get the amount of hours of the assignment
+     * 
+     * @return int                   The amount of hours
+     */
+    public function getHours() {
+        return $this->hours;
+    }
+
+    /**
+     * Set the amount of hours of the assignment
+     * 
+     * @param int $hours             The new amount hours for the assignment
+     * 
+     * @throws PDOException          If something went wrong with the database
+     * 
+     * @return bool                  True on succes, false on failure
+     */
+    public function setHours($hours) {
+        $stmt = $this->pdo->prepare("UPDATE `".constants::db_prefix."assignment` SET `hours`=? WHERE `id`=?");
+        $stmt->execute(array($hours, $this->id));
+        if ($stmt->rowCount() == 1) {
+            $this->hours = $hours;
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Get the price per hour of the assignment
+     * 
+     * @return float                 The price per hour
+     */
+    public function getPricePerHour() {
+        return $this->price_per_hour;
+    }
+
+    /**
+     * Set the price per hour of the assignment
+     * 
+     * @param float $price_per_hour  The new price per hour for the assignment
+     * 
+     * @throws PDOException          If something went wrong with the database
+     * 
+     * @return bool                  True on succes, false on failure
+     */
+    public function setPricePerHour($price_per_hour) {
+        $stmt = $this->pdo->prepare("UPDATE `".constants::db_prefix."assignment` SET `price_per_hour`=? WHERE `id`=?");
+        $stmt->execute(array($price_per_hour, $this->id));
+        if ($stmt->rowCount() == 1) {
+            $this->price_per_hour = $price_per_hour;
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Get the VAT percentage of the assignment
+     * 
+     * @return float                 The VAT percentage
+     */
+    public function getVAT() {
+        return $this->vat;
+    }
+
+    /**
+     * Set the VAT percentage of the assignment
+     * 
+     * @param float $vat             The new VAT percentage for the assignment
+     * 
+     * @throws PDOException          If something went wrong with the database
+     * 
+     * @return bool                  True on succes, false on failure
+     */
+    public function setVAT($vat) {
+        $stmt = $this->pdo->prepare("UPDATE `".constants::db_prefix."assignment` SET `VAT_percentage`=? WHERE `id`=?");
+        $stmt->execute(array($vat, $this->id));
+        if ($stmt->rowCount() == 1) {
+            $this->vat = $vat;
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    //------------------------------------------------------------------------------
+    // Other functions
+    //------------------------------------------------------------------------------
+
+    /**
+     * Calculate useful numbers about the assignment
+     * 
+     * Subtotal: price_per_hour \* hours
+     * 
+     * VAT: subtotal \* VAT_percentage
+     * 
+     * Total: subtotal + VAT
+     * 
+     * @param int $what              Any of assignment::SUBTOTAL, assignment::VAT, assignment::TOTAL
+     * @param int $round             How many decimals to round on
+     * @param bool $format           Whether to format the number nicely (for output) or not (for calculations)
+     * 
+     * @throws PDOException          If something went wrong with the database
+     * 
+     * @return float|bool            The calculated value rounded on $round decimals, or false when the input is incorrect
+     */
+    public function calculate($what = self::TOTAL, $round = 2, $format = true) {
+        $return = 0;
+        switch ($what) {
+            case self::SUBTOTAL:
+                $return = $this->getPricePerHour() * $this->getHours();
+                break;
+            case self::VAT:
+                $return = $this->calculate(self::SUBTOTAL, $round + 1, false) * $this->getVAT() / 100;
+                break;
+            case self::TOTAL:
+                $return = $this->calculate(self::SUBTOTAL, $round + 1, false) + $this->calculate(self::VAT, $round + 1, false);
+                break;
+            default:
+                return false;
+        }
+        if ($format) {
+            return number_format($return, $round);
+        } else {
+            return round($return, $round);
+        }
+    }
+
+    /**
+     * Remove this assignment from the database
+     * 
+     * If this doesn't succeed (i.e. false is returned), that means the assignment was removed manually or by another instance of this class
+     * 
+     * @throws PDOException          If something went wrong with the database
+     * 
+     * @return bool                  True on success, false on failure
+     */
+    public function delete() {
+        $stmt = $this->pdo->prepare("DELETE FROM `".constants::db_prefix."assignment` WHERE `id`=?");
+        $stmt->execute(array($this->id));
+        if ($stmt->rowCount() != 1) {
+            return false;
+        } else {
+            return true;
+        }
+    }
+}
diff --git a/docs/files/client.class.html b/docs/files/client.class.html
new file mode 100644
index 0000000..9a1ca8c
--- /dev/null
+++ b/docs/files/client.class.html
@@ -0,0 +1,280 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"/>
+    <meta charset="utf-8"/>
+    <title>API Documentation</title>
+    <meta name="author" content=""/>
+    <meta name="description" content=""/>
+
+    <link href="../css/bootstrap-combined.no-icons.min.css" rel="stylesheet">
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+    <script src="../js/jquery.smooth-scroll.js"></script>
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+    <!-- TODO: Add http://jscrollpane.kelvinluck.com/ to style the scrollbars for browsers not using webkit-->
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+                var language = 'php';
+
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+
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+            loadExternalCodeSnippets();
+        });
+        $('#source-view').on('shown', function () {
+            loadExternalCodeSnippets();
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+    </script>
+
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+                            <li>
+                                <a href="../graphs/class.html">
+                                    <i class="icon-list-alt"></i>&#160;Class hierarchy diagram
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+                            </li>
+                            <li>
+                                <a href="../reports/markers.html">
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        <i class="icon-list-alt"></i>&#160;Markers <span class="label label-info pull-right">1</span>
+                                </a>
+                            </li>
+                            <li>
+                                <a href="../reports/deprecated.html">
+                                                                                                            <i class="icon-list-alt"></i>&#160;Deprecated <span class="label label-info pull-right">0</span>
+                                </a>
+                            </li>
+                        </ul>
+                    </li>
+                </ul>
+            </div>
+        </div>
+    </div>
+    <!--<div class="go_to_top">-->
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+                                <a href="../namespaces/default.html" style="margin-left: 30px; padding-left: 0">\</a>
+            </div>
+            <div id="namespace-970143172" class="accordion-body collapse in">
+                <div class="accordion-inner">
+
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+                    <ul>
+                                                                                                    <li class="class"><a href="../classes/assignment.html">assignment</a></li>
+                                                    <li class="class"><a href="../classes/BusinessAdmin.html">BusinessAdmin</a></li>
+                                                    <li class="class"><a href="../classes/client.html">client</a></li>
+                                                    <li class="class"><a href="../classes/constants.html">constants</a></li>
+                                                    <li class="class"><a href="../classes/contact.html">contact</a></li>
+                                                    <li class="class"><a href="../classes/correspondence.html">correspondence</a></li>
+                                                    <li class="class"><a href="../classes/file.html">file</a></li>
+                                                    <li class="class"><a href="../classes/offer.html">offer</a></li>
+                                                    <li class="class"><a href="../classes/response.html">response</a></li>
+                                            </ul>
+                </div>
+            </div>
+        </div>
+    </div>
+
+        </div>
+    </section>
+    <section class="row-fluid">
+        <div class="span10 offset2">
+            <div class="row-fluid">
+                <div class="span8 content file">
+                    <nav>
+                                                                    </nav>
+
+                    <a href="#source-view" role="button" class="pull-right btn" data-toggle="modal"><i class="icon-code"></i></a>
+                    <h1><small></small>client.class.php</h1>
+                    <p><em>Provides the client class, an interface to the client table in the database</em></p>
+                    
+
+                    
+                    
+                                        <h2>Classes</h2>
+                    <table class="table table-hover">
+                                            <tr>
+                            <td><a href="../classes/client.html">client</a></td>
+                            <td><em>An interface to the client table in the database</em></td>
+                        </tr>
+                                        </table>
+                                    </div>
+
+                <aside class="span4 detailsbar">
+                    <dl>
+                                                    <dt>Package</dt>
+                            <dd><div class="namespace-wrapper">\Default</div></dd>
+                        
+                        
+                    </dl>
+                    <h2>Tags</h2>
+                    <table class="table table-condensed">
+                                                    <tr>
+                                <th>
+                                    author
+                                </th>
+                                <td>
+                                                                            <p>Camil Staps</p>
+<p>BusinessAdmin: administrative software for small companies
+Copyright (C) 2015 Camil Staps (ViviSoft)</p>
+<p>This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.</p>
+<p>This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.</p>
+<p>You should have received a copy of the GNU General Public License
+along with this program.  If not, see <a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>.</p>
+                                                                    </td>
+                            </tr>
+                                            </table>
+
+                </aside>
+            </div>
+
+            
+            
+        </div>
+    </section>
+
+    <div id="source-view" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="source-view-label" aria-hidden="true">
+        <div class="modal-header">
+            <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
+            <h3 id="source-view-label"></h3>
+        </div>
+        <div class="modal-body">
+            <pre data-src="../files/client.class.php.txt" class="language-php line-numbers"></pre>
+        </div>
+    </div>
+
+    <footer class="row-fluid">
+        <section class="span10 offset2">
+            <section class="row-fluid">
+                <section class="span10 offset1">
+                    <section class="row-fluid footer-sections">
+                        <section class="span4">
+                                                        <h1><i class="icon-code"></i></h1>
+                            <div>
+                                <ul>
+                                                                    </ul>
+                            </div>
+                        </section>
+                        <section class="span4">
+                                                        <h1><i class="icon-bar-chart"></i></h1>
+                            <div>
+                                <ul>
+                                    <li><a href="../graphs/class.html">Class Hierarchy Diagram</a></li>
+                                </ul>
+                            </div>
+                        </section>
+                        <section class="span4">
+                                                        <h1><i class="icon-pushpin"></i></h1>
+                            <div>
+                                <ul>
+                                    <li><a href="../reports/errors.html">Errors</a></li>
+                                    <li><a href="../reports/markers.html">Markers</a></li>
+                                </ul>
+                            </div>
+                        </section>
+                    </section>
+                </section>
+            </section>
+            <section class="row-fluid">
+                <section class="span10 offset1">
+                    <hr />
+                    Documentation is powered by <a href="http://www.phpdoc.org/">phpDocumentor </a> and authored
+                    on February 7th, 2015 at 21:04.
+                </section>
+            </section>
+        </section>
+    </footer>
+</div>
+
+</body>
+</html>
diff --git a/docs/files/client.class.php.txt b/docs/files/client.class.php.txt
new file mode 100644
index 0000000..bde99ff
--- /dev/null
+++ b/docs/files/client.class.php.txt
@@ -0,0 +1,195 @@
+<?php
+/**
+ * Provides the client class, an interface to the client table in the database
+ * 
+ * @author Camil Staps
+ * 
+ * BusinessAdmin: administrative software for small companies
+ * Copyright (C) 2015 Camil Staps (ViviSoft)
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * An interface to the client table in the database
+ */
+class client {
+    /**
+     * @var pdo $pdo                    The PDO class for database communication
+     * @var int $id                     The id of the client
+     * @var string $name                The name of the client
+     */
+    protected $pdo, $id, $name;
+
+    /**
+     * Create a new instance
+     * 
+     * @param PDO $pdo                  The PDO class, to access the database
+     * @param int $id                   The id of the client to fetch
+     * 
+     * @throws PDOException             If something went wrong with the database
+     * @throws Exception                If the client could not be found
+     */
+    public function __construct($pdo, $id) {
+        $this->pdo = $pdo;
+
+        $stmt = $this->pdo->prepare("SELECT * FROM `".constants::db_prefix."client` WHERE `id`=?");
+        $stmt->execute(array($id));
+        if ($stmt->rowCount() == 0) {
+            throw new Exception("The client with id '$id' could not be found.");
+        }
+        $client = $stmt->fetch(PDO::FETCH_ASSOC);
+
+        $this->id = $client['id'];
+        $this->name = $client['name'];
+    }
+
+    //------------------------------------------------------------------------------
+    // Getters and setters
+    //------------------------------------------------------------------------------
+
+    /**
+     * Get the ID of the client
+     * 
+     * @return int                      The ID
+     */
+    public function getId() {
+        return $this->id;
+    }
+
+    /**
+     * Get the name of the client
+     * 
+     * @return string The name
+     */
+    public function getName() {
+        return $this->name;
+    }
+
+    /**
+     * Set the name of the client
+     * 
+     * @param string $name              The new name for the client
+     * 
+     * @throws PDOException             If something went wrong with the database
+     * 
+     * @return bool                     True on succes, false on failure
+     */
+    public function setName($name) {
+        $stmt = $this->pdo->prepare("UPDATE `".constants::db_prefix."client` SET `name`=? WHERE `id`=?");
+        $stmt->execute(array($name, $this->id));
+        if ($stmt->rowCount() == 1) {
+            $this->name = $name;
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Get all contact ids for this client
+     * 
+     * @see client::getContacts()       This funtion returns instances of the contact class instead of just the ids
+     * 
+     * @throws PDOException             Is something went wrong with the database
+     * 
+     * @return int[]                    The ids
+     */
+    public function getContactIds() {
+        $ids = array();
+        $contacts = $this->pdo->query("SELECT `id` FROM `".constants::db_prefix."contact` WHERE `clientId`={$this->id}")->fetchAll(PDO::FETCH_ASSOC);
+        foreach ($contacts as $contact) {
+            $ids[] = $contact['id'];
+        }
+        return $ids;
+    }
+
+    /**
+     * Get all contacts for this client
+     * 
+     * @see client::getContactIds()     This function returns just the ids of the contacts, and not instances of the contact class
+     * 
+     * @throws PDOException             If something went wrong with the database
+     * 
+     * @return contact[]                An array indexed by id of instances of the contact class
+     */
+    public function getContacts() {
+        $ids = $this->getContactIds();
+        $contacts = array();
+        foreach ($ids as $id) {
+            $contacts[$id] = new contact($this->pdo, $id);
+        }
+        return $contacts;
+    }
+
+    //------------------------------------------------------------------------------
+    // Other functions
+    //------------------------------------------------------------------------------
+
+    /**
+     * Remove this client from the database
+     * 
+     * If this doesn't succeed (i.e. false is returned), that means the client was removed manually or by another instance of this class
+     * 
+     * @throws PDOException             If something went wrong with the database
+     * 
+     * @return bool                     True on success, false on failure
+     */
+    public function delete() {
+        $stmt = $this->pdo->prepare("DELETE FROM `".constants::db_prefix."client` WHERE `id`=?");
+        $stmt->execute(array($this->id));
+        if ($stmt->rowCount() != 1) {
+            return false;
+        } else {
+            return true;
+        }
+    }
+
+    /**
+     * Make a new contact for this client
+     * 
+     * @param string $name              The name for this contact
+     * @param string $email             The email for this contact
+     * @param string $address           The first address line of this contact (normally street and house number)
+     * @param string $address_2         The second address line of this contact
+     * @param string $postal_code       The postal code for this contact
+     * @param string $city              The city for this contact
+     * @param string $state             The state for this contact
+     * @param string $country           The country for this contact
+     * 
+     * @throws PDOException             If something went wrong with the database
+     * @throws Exception                If there was a problem with the input
+     * 
+     * @return contact                  A new instance of the contact class containing the new contact
+     */
+    public function createContact($name, $email, $address, $address_2, $postal_code, $city, $country) {
+        $stmt = $this->pdo->prepare("INSERT INTO `".constants::db_prefix."contact` (`clientId`,`name`,`email`,`address`,`address_2`,`postal_code`,`city`,`country`) VALUES (?,?,?,?,?,?,?,?)");
+        $stmt->execute(array(
+            $this->id,
+            $name,
+            $email,
+            $address,
+            $address_2,
+            $postal_code,
+            $city,
+            $country
+        ));
+        if ($stmt->rowCount() == 1) {
+            return new contact($this->pdo, $this->pdo->lastInsertId());
+        } else {
+            $error = $stmt->errorInfo();
+            throw new Exception($error[2]);
+        }
+    }
+}
diff --git a/docs/files/constants.class.html b/docs/files/constants.class.html
new file mode 100644
index 0000000..d0a03fd
--- /dev/null
+++ b/docs/files/constants.class.html
@@ -0,0 +1,280 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"/>
+    <meta charset="utf-8"/>
+    <title>API Documentation</title>
+    <meta name="author" content=""/>
+    <meta name="description" content=""/>
+
+    <link href="../css/bootstrap-combined.no-icons.min.css" rel="stylesheet">
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+    <!-- TODO: Add http://jscrollpane.kelvinluck.com/ to style the scrollbars for browsers not using webkit-->
+        <script type="text/javascript">
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+            Array.prototype.slice.call(document.querySelectorAll('pre[data-src]')).forEach(function (pre) {
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+                var extension = (src.match(/\.(\w+)$/) || [, ''])[1];
+                var language = 'php';
+
+                var code = document.createElement('code');
+                code.className = 'language-' + language;
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+
+                xhr.send(null);
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+
+        $(document).ready(function(){
+            loadExternalCodeSnippets();
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+        $('#source-view').on('shown', function () {
+            loadExternalCodeSnippets();
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+            <a class="brand" href="../index.html">API Documentation</a>
+
+            <div class="nav-collapse">
+                <ul class="nav pull-right">
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+                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
+                            Charts <b class="caret"></b>
+                        </a>
+                        <ul class="dropdown-menu">
+                            <li>
+                                <a href="../graphs/class.html">
+                                    <i class="icon-list-alt"></i>&#160;Class hierarchy diagram
+                                </a>
+                            </li>
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+                    </li>
+                    <li class="dropdown" id="reports-menu">
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+                                </a>
+                            </li>
+                            <li>
+                                <a href="../reports/markers.html">
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        <i class="icon-list-alt"></i>&#160;Markers <span class="label label-info pull-right">1</span>
+                                </a>
+                            </li>
+                            <li>
+                                <a href="../reports/deprecated.html">
+                                                                                                            <i class="icon-list-alt"></i>&#160;Deprecated <span class="label label-info pull-right">0</span>
+                                </a>
+                            </li>
+                        </ul>
+                    </li>
+                </ul>
+            </div>
+        </div>
+    </div>
+    <!--<div class="go_to_top">-->
+    <!--<a href="#___" style="color: inherit">Back to top&#160;&#160;<i class="icon-upload icon-white"></i></a>-->
+    <!--</div>-->
+</div>
+
+<div id="___" class="container-fluid">
+        <section class="row-fluid">
+        <div class="span2 sidebar">
+                                <div class="accordion" style="margin-bottom: 0">
+        <div class="accordion-group">
+            <div class="accordion-heading">
+                                    <a class="accordion-toggle " data-toggle="collapse" data-target="#namespace-32393827"></a>
+                                <a href="../namespaces/default.html" style="margin-left: 30px; padding-left: 0">\</a>
+            </div>
+            <div id="namespace-32393827" class="accordion-body collapse in">
+                <div class="accordion-inner">
+
+                    
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+                                                                                                    <li class="class"><a href="../classes/assignment.html">assignment</a></li>
+                                                    <li class="class"><a href="../classes/BusinessAdmin.html">BusinessAdmin</a></li>
+                                                    <li class="class"><a href="../classes/client.html">client</a></li>
+                                                    <li class="class"><a href="../classes/constants.html">constants</a></li>
+                                                    <li class="class"><a href="../classes/contact.html">contact</a></li>
+                                                    <li class="class"><a href="../classes/correspondence.html">correspondence</a></li>
+                                                    <li class="class"><a href="../classes/file.html">file</a></li>
+                                                    <li class="class"><a href="../classes/offer.html">offer</a></li>
+                                                    <li class="class"><a href="../classes/response.html">response</a></li>
+                                            </ul>
+                </div>
+            </div>
+        </div>
+    </div>
+
+        </div>
+    </section>
+    <section class="row-fluid">
+        <div class="span10 offset2">
+            <div class="row-fluid">
+                <div class="span8 content file">
+                    <nav>
+                                                                    </nav>
+
+                    <a href="#source-view" role="button" class="pull-right btn" data-toggle="modal"><i class="icon-code"></i></a>
+                    <h1><small></small>constants.class.php</h1>
+                    <p><em>Some constants that can be used on other locations</em></p>
+                    
+
+                    
+                    
+                                        <h2>Classes</h2>
+                    <table class="table table-hover">
+                                            <tr>
+                            <td><a href="../classes/constants.html">constants</a></td>
+                            <td><em>A class for some constants</em></td>
+                        </tr>
+                                        </table>
+                                    </div>
+
+                <aside class="span4 detailsbar">
+                    <dl>
+                                                    <dt>Package</dt>
+                            <dd><div class="namespace-wrapper">\Default</div></dd>
+                        
+                        
+                    </dl>
+                    <h2>Tags</h2>
+                    <table class="table table-condensed">
+                                                    <tr>
+                                <th>
+                                    author
+                                </th>
+                                <td>
+                                                                            <p>Camil Staps</p>
+<p>BusinessAdmin: administrative software for small companies
+Copyright (C) 2015 Camil Staps (ViviSoft)</p>
+<p>This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.</p>
+<p>This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.</p>
+<p>You should have received a copy of the GNU General Public License
+along with this program.  If not, see <a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>.</p>
+                                                                    </td>
+                            </tr>
+                                            </table>
+
+                </aside>
+            </div>
+
+            
+            
+        </div>
+    </section>
+
+    <div id="source-view" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="source-view-label" aria-hidden="true">
+        <div class="modal-header">
+            <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
+            <h3 id="source-view-label"></h3>
+        </div>
+        <div class="modal-body">
+            <pre data-src="../files/constants.class.php.txt" class="language-php line-numbers"></pre>
+        </div>
+    </div>
+
+    <footer class="row-fluid">
+        <section class="span10 offset2">
+            <section class="row-fluid">
+                <section class="span10 offset1">
+                    <section class="row-fluid footer-sections">
+                        <section class="span4">
+                                                        <h1><i class="icon-code"></i></h1>
+                            <div>
+                                <ul>
+                                                                    </ul>
+                            </div>
+                        </section>
+                        <section class="span4">
+                                                        <h1><i class="icon-bar-chart"></i></h1>
+                            <div>
+                                <ul>
+                                    <li><a href="../graphs/class.html">Class Hierarchy Diagram</a></li>
+                                </ul>
+                            </div>
+                        </section>
+                        <section class="span4">
+                                                        <h1><i class="icon-pushpin"></i></h1>
+                            <div>
+                                <ul>
+                                    <li><a href="../reports/errors.html">Errors</a></li>
+                                    <li><a href="../reports/markers.html">Markers</a></li>
+                                </ul>
+                            </div>
+                        </section>
+                    </section>
+                </section>
+            </section>
+            <section class="row-fluid">
+                <section class="span10 offset1">
+                    <hr />
+                    Documentation is powered by <a href="http://www.phpdoc.org/">phpDocumentor </a> and authored
+                    on February 7th, 2015 at 21:04.
+                </section>
+            </section>
+        </section>
+    </footer>
+</div>
+
+</body>
+</html>
diff --git a/docs/files/constants.class.php.txt b/docs/files/constants.class.php.txt
new file mode 100644
index 0000000..83ae246
--- /dev/null
+++ b/docs/files/constants.class.php.txt
@@ -0,0 +1,71 @@
+<?php
+/**
+ * Some constants that can be used on other locations
+ * 
+ * @author Camil Staps
+ * 
+ * BusinessAdmin: administrative software for small companies
+ * Copyright (C) 2015 Camil Staps (ViviSoft)
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * A class for some constants
+ */
+class constants {
+	/** @const db_prefix 				A prefix to add to the tables in the database (leave empty for none) */
+	const db_prefix						= '';
+
+	/** @const files_folder				The folder to store all files (appendices, invoices, etc.) in; with a trailing slash */
+	const files_folder					= '/var/www/localhost/BusinessAdmin/files/';
+	/** @const files_folder_external 	The external URI to this folder; with a trailing slash */
+	const files_folder_external			= 'http://localhost/BusinessAdmin/files/';
+	/** @const files_folder_trash		The folder inside files_folder to use a trash, without any trailing slashes */
+	const files_folder_trash			= 'trash';
+
+	/** @const url_external				The external URI to this folder; with a trailing slash */
+	const url_external					= 'http://localhost/BusinessAdmin/';
+	/** @const url_internal				The URI without the domain name; with a slash at the beginning but not at the end */
+	const url_internal					= '/BusinessAdmin';
+
+	/** @const my_name					Name of this control panel */
+	const my_name						= 'BusinessAdmin';
+
+	/**
+	 * @const invoice_name				Your name or the name of your business
+	 * @const invoice_address_1			First address line
+	 * @const invoice_address_2			Second address line
+	 * @const invoice_address_3			Third address line
+	 * @const invoice_tax_nr			Your tax number
+	 * @const invoice_iban				Your IBAN number
+	 * @const invoice_bic				The BIC code of your bank
+	 * @const invoice_tel_nr			Your telephone number
+	 * @const invoice_email				Your email address
+	 * @const invoice_valuta			The valuta symbol (will be placed in front of amounts). You can use a symbol like $ or a code like USD
+	 */
+	const invoice_name					= 'BusinessAdmin';
+	const invoice_address_1				= 'My Street 1';
+	const invoice_address_2				= '12345 My City';
+	const invoice_address_3				= 'My Country';
+	const invoice_tax_nr				= 'XX123456789A00';
+	const invoice_iban					= 'XX00 ABCD 1234 5678 90';
+	const invoice_bic					= 'XXXX XXXX';
+	const invoice_tel_nr				= '+31 6 1234 5678';
+	const invoice_email					= 'my-email@domain.tld';
+	const invoice_valuta				= '$'; // chr(128) for euro
+
+	/** @const version					Version of BusinessAdmin. Don't change this yourself! */
+	const version						= '0.1';
+}
diff --git a/docs/files/contact.class.html b/docs/files/contact.class.html
new file mode 100644
index 0000000..d4ef593
--- /dev/null
+++ b/docs/files/contact.class.html
@@ -0,0 +1,280 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"/>
+    <meta charset="utf-8"/>
+    <title>API Documentation</title>
+    <meta name="author" content=""/>
+    <meta name="description" content=""/>
+
+    <link href="../css/bootstrap-combined.no-icons.min.css" rel="stylesheet">
+    <link href="../css/font-awesome.min.css" rel="stylesheet">
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+    <link href="../css/template.css" rel="stylesheet" media="all"/>
+    
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+    <script src="../js/bootstrap.min.js"></script>
+    <script src="../js/jquery.smooth-scroll.js"></script>
+    <script src="../js/prism.min.js"></script>
+    <!-- TODO: Add http://jscrollpane.kelvinluck.com/ to style the scrollbars for browsers not using webkit-->
+        <script type="text/javascript">
+        function loadExternalCodeSnippets() {
+            Array.prototype.slice.call(document.querySelectorAll('pre[data-src]')).forEach(function (pre) {
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+                var extension = (src.match(/\.(\w+)$/) || [, ''])[1];
+                var language = 'php';
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+                code.className = 'language-' + language;
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+                        }
+                        else {
+                            code.textContent = '✖ Error: File does not exist or is empty';
+                        }
+                    }
+                };
+
+                xhr.send(null);
+            });
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+
+        $(document).ready(function(){
+            loadExternalCodeSnippets();
+        });
+        $('#source-view').on('shown', function () {
+            loadExternalCodeSnippets();
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+    </script>
+
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+                        </a>
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+                                <a href="../graphs/class.html">
+                                    <i class="icon-list-alt"></i>&#160;Class hierarchy diagram
+                                </a>
+                            </li>
+                        </ul>
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+                    <li class="dropdown" id="reports-menu">
+                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
+                            Reports <b class="caret"></b>
+                        </a>
+                        <ul class="dropdown-menu">
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+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        <i class="icon-list-alt"></i>&#160;Errors <span class="label label-info pull-right">50</span>
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+                            </li>
+                            <li>
+                                <a href="../reports/markers.html">
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        <i class="icon-list-alt"></i>&#160;Markers <span class="label label-info pull-right">1</span>
+                                </a>
+                            </li>
+                            <li>
+                                <a href="../reports/deprecated.html">
+                                                                                                            <i class="icon-list-alt"></i>&#160;Deprecated <span class="label label-info pull-right">0</span>
+                                </a>
+                            </li>
+                        </ul>
+                    </li>
+                </ul>
+            </div>
+        </div>
+    </div>
+    <!--<div class="go_to_top">-->
+    <!--<a href="#___" style="color: inherit">Back to top&#160;&#160;<i class="icon-upload icon-white"></i></a>-->
+    <!--</div>-->
+</div>
+
+<div id="___" class="container-fluid">
+        <section class="row-fluid">
+        <div class="span2 sidebar">
+                                <div class="accordion" style="margin-bottom: 0">
+        <div class="accordion-group">
+            <div class="accordion-heading">
+                                    <a class="accordion-toggle " data-toggle="collapse" data-target="#namespace-1186592253"></a>
+                                <a href="../namespaces/default.html" style="margin-left: 30px; padding-left: 0">\</a>
+            </div>
+            <div id="namespace-1186592253" class="accordion-body collapse in">
+                <div class="accordion-inner">
+
+                    
+                    <ul>
+                                                                                                    <li class="class"><a href="../classes/assignment.html">assignment</a></li>
+                                                    <li class="class"><a href="../classes/BusinessAdmin.html">BusinessAdmin</a></li>
+                                                    <li class="class"><a href="../classes/client.html">client</a></li>
+                                                    <li class="class"><a href="../classes/constants.html">constants</a></li>
+                                                    <li class="class"><a href="../classes/contact.html">contact</a></li>
+                                                    <li class="class"><a href="../classes/correspondence.html">correspondence</a></li>
+                                                    <li class="class"><a href="../classes/file.html">file</a></li>
+                                                    <li class="class"><a href="../classes/offer.html">offer</a></li>
+                                                    <li class="class"><a href="../classes/response.html">response</a></li>
+                                            </ul>
+                </div>
+            </div>
+        </div>
+    </div>
+
+        </div>
+    </section>
+    <section class="row-fluid">
+        <div class="span10 offset2">
+            <div class="row-fluid">
+                <div class="span8 content file">
+                    <nav>
+                                                                    </nav>
+
+                    <a href="#source-view" role="button" class="pull-right btn" data-toggle="modal"><i class="icon-code"></i></a>
+                    <h1><small></small>contact.class.php</h1>
+                    <p><em>Provides the contact class, an interface to the contact table in the database</em></p>
+                    
+
+                    
+                    
+                                        <h2>Classes</h2>
+                    <table class="table table-hover">
+                                            <tr>
+                            <td><a href="../classes/contact.html">contact</a></td>
+                            <td><em>An interface to the contact table in the database</em></td>
+                        </tr>
+                                        </table>
+                                    </div>
+
+                <aside class="span4 detailsbar">
+                    <dl>
+                                                    <dt>Package</dt>
+                            <dd><div class="namespace-wrapper">\Default</div></dd>
+                        
+                        
+                    </dl>
+                    <h2>Tags</h2>
+                    <table class="table table-condensed">
+                                                    <tr>
+                                <th>
+                                    author
+                                </th>
+                                <td>
+                                                                            <p>Camil Staps</p>
+<p>BusinessAdmin: administrative software for small companies
+Copyright (C) 2015 Camil Staps (ViviSoft)</p>
+<p>This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.</p>
+<p>This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.</p>
+<p>You should have received a copy of the GNU General Public License
+along with this program.  If not, see <a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>.</p>
+                                                                    </td>
+                            </tr>
+                                            </table>
+
+                </aside>
+            </div>
+
+            
+            
+        </div>
+    </section>
+
+    <div id="source-view" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="source-view-label" aria-hidden="true">
+        <div class="modal-header">
+            <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
+            <h3 id="source-view-label"></h3>
+        </div>
+        <div class="modal-body">
+            <pre data-src="../files/contact.class.php.txt" class="language-php line-numbers"></pre>
+        </div>
+    </div>
+
+    <footer class="row-fluid">
+        <section class="span10 offset2">
+            <section class="row-fluid">
+                <section class="span10 offset1">
+                    <section class="row-fluid footer-sections">
+                        <section class="span4">
+                                                        <h1><i class="icon-code"></i></h1>
+                            <div>
+                                <ul>
+                                                                    </ul>
+                            </div>
+                        </section>
+                        <section class="span4">
+                                                        <h1><i class="icon-bar-chart"></i></h1>
+                            <div>
+                                <ul>
+                                    <li><a href="../graphs/class.html">Class Hierarchy Diagram</a></li>
+                                </ul>
+                            </div>
+                        </section>
+                        <section class="span4">
+                                                        <h1><i class="icon-pushpin"></i></h1>
+                            <div>
+                                <ul>
+                                    <li><a href="../reports/errors.html">Errors</a></li>
+                                    <li><a href="../reports/markers.html">Markers</a></li>
+                                </ul>
+                            </div>
+                        </section>
+                    </section>
+                </section>
+            </section>
+            <section class="row-fluid">
+                <section class="span10 offset1">
+                    <hr />
+                    Documentation is powered by <a href="http://www.phpdoc.org/">phpDocumentor </a> and authored
+                    on February 7th, 2015 at 21:04.
+                </section>
+            </section>
+        </section>
+    </footer>
+</div>
+
+</body>
+</html>
diff --git a/docs/files/contact.class.php.txt b/docs/files/contact.class.php.txt
new file mode 100644
index 0000000..90f965b
--- /dev/null
+++ b/docs/files/contact.class.php.txt
@@ -0,0 +1,378 @@
+<?php
+/**
+ * Provides the contact class, an interface to the contact table in the database
+ * 
+ * @author Camil Staps
+ * 
+ * BusinessAdmin: administrative software for small companies
+ * Copyright (C) 2015 Camil Staps (ViviSoft)
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * An interface to the contact table in the database
+ */
+class contact {
+    /**
+     * @var PDO $pdo                    The PDO class for database communication
+     * @var int $id                     The id of the contact
+     * @var int $clientId               The id of the client the contact is linked to
+     * @var string $name                The name of the contact
+     * @var string $email               The email address of the contact
+     * @var string $address             The first address line (normally street and house number) of the contact
+     * @var string $address_2           The second address line (can be null)
+     * @var string $postal_code         The postal code of the contact
+     * @var string $city                The city of the contact
+     * @var string $country             The country of the contact
+     * @var string $language            The language of the contact
+     */
+    protected $pdo, $id, $clientId, $name, $email, $address, $postal_code, $city, $country, $language;
+
+    /**
+     * Create a new instance
+     * 
+     * @param PDO $pdo                  The PDO class, to access the database
+     * @param int $id                   The id of the contact to fetch
+     * 
+     * @throws PDOException             If something went wrong with the database
+     * @throws Exception                If the contact could not be found
+     */
+    public function __construct($pdo, $id) {
+        $this->pdo = $pdo;
+
+        $stmt = $this->pdo->prepare("SELECT * FROM `".constants::db_prefix."contact` WHERE `id`=?");
+        $stmt->execute(array($id));
+        if ($stmt->rowCount() == 0) {
+            throw new Exception("The contact with id '$id' could not be found.");
+        }
+        $contact = $stmt->fetch(PDO::FETCH_ASSOC);
+
+        $this->id = $contact['id'];
+        $this->clientId = $contact['clientId'];
+        $this->name = $contact['name'];
+        $this->email = $contact['email'];
+        $this->address = $contact['address'];
+        $this->address_2 = $contact['address_2'];
+        $this->postal_code = $contact['postal_code'];
+        $this->city = $contact['city'];
+        $this->country = $contact['country'];
+        $this->language = $contact['language'];
+    }
+
+    //------------------------------------------------------------------------------
+    // Getters and setters
+    //------------------------------------------------------------------------------
+
+    /**
+     * Get the ID of the contact
+     * 
+     * @return int                      The ID
+     */
+    public function getId() {
+        return $this->id;
+    }
+
+    /**
+     * Get the ID of the client that this contact is linked to
+     * 
+     * @return int                      The ID
+     */
+    public function getClientId() {
+        return $this->clientId;
+    }
+
+    /**
+     * Get the client that this contact is linked to
+     * 
+     * @return client                   The client
+     */
+    public function getClient() {
+        return new client($this->pdo, $this->clientId);
+    }
+
+    /**
+     * Get the name of the contact
+     * 
+     * @return string                   The name
+     */
+    public function getName() {
+        return $this->name;
+    }
+
+    /**
+     * Set the name of the contact
+     * 
+     * @param string $name              The new name for the contact
+     * 
+     * @throws PDOException             If something went wrong with the database
+     * 
+     * @return bool                     True on succes, false on failure
+     */
+    public function setName($name) {
+        $stmt = $this->pdo->prepare("UPDATE `".constants::db_prefix."contact` SET `name`=? WHERE `id`=?");
+        $stmt->execute(array($name, $this->id));
+        if ($stmt->rowCount() == 1) {
+            $this->name = $name;
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Get the email of the contact
+     * 
+     * @return string                   The email
+     */
+    public function getEmail() {
+        return $this->email;
+    }
+
+    /**
+     * Set the email of the contact
+     * 
+     * @param string $email             The new email for the contact
+     * 
+     * @throws PDOException             If something went wrong with the database
+     * 
+     * @return bool                     True on succes, false on failure
+     */
+    public function setEmail($email) {
+        $stmt = $this->pdo->prepare("UPDATE `".constants::db_prefix."contact` SET `email`=? WHERE `id`=?");
+        $stmt->execute(array($email, $this->id));
+        if ($stmt->rowCount() == 1) {
+            $this->email = $email;
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Get the first address line of the contact
+     * 
+     * @return string                   The address
+     */
+    public function getAddress() {
+        return $this->address;
+    }
+
+    /**
+     * Set the first address line of the contact
+     * 
+     * @param string $address           The new address for the contact
+     * 
+     * @throws PDOException             If something went wrong with the database
+     * 
+     * @return bool                     True on succes, false on failure
+     */
+    public function setAddress($address) {
+        $stmt = $this->pdo->prepare("UPDATE `".constants::db_prefix."contact` SET `address`=? WHERE `id`=?");
+        $stmt->execute(array($address, $this->id));
+        if ($stmt->rowCount() == 1) {
+            $this->address = $address;
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Get the second address line of the contact
+     * 
+     * @return string                   The address
+     */
+    public function getAddress_2() {
+        return $this->address_2;
+    }
+
+    /**
+     * Set the second address line of the contact
+     * 
+     * @param string $address_2         The new address for the contact
+     * 
+     * @throws PDOException             If something went wrong with the database
+     * 
+     * @return bool                     True on succes, false on failure
+     */
+    public function setAddress_2($address_2) {
+        $stmt = $this->pdo->prepare("UPDATE `".constants::db_prefix."contact` SET `address_2`=? WHERE `id`=?");
+        $stmt->execute(array($address_2, $this->id));
+        if ($stmt->rowCount() == 1) {
+            $this->address_2 = $address_2;
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Get the postal_code of the contact
+     * 
+     * @return string                   The postal_code
+     */
+    public function getPostalCode() {
+        return $this->postal_code;
+    }
+
+    /**
+     * Set the postal code of the contact
+     * 
+     * @param $postal_code string       The new postal code for the contact
+     * 
+     * @throws PDOException             If something went wrong with the database
+     * 
+     * @return bool                     True on succes, false on failure
+     */
+    public function setPostalCode($postal_code) {
+        $stmt = $this->pdo->prepare("UPDATE `".constants::db_prefix."contact` SET `postal_code`=? WHERE `id`=?");
+        $stmt->execute(array($postal_code, $this->id));
+        if ($stmt->rowCount() == 1) {
+            return true;
+            $this->postal_code = $postal_code;
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Get the city of the contact
+     * 
+     * @return string                   The city
+     */
+    public function getCity() {
+        return $this->city;
+    }
+
+    /**
+     * Set the city of the contact
+     * 
+     * @param string $city              The new city for the contact
+     * 
+     * @throws PDOException             If something went wrong with the database
+     * 
+     * @return bool                     True on succes, false on failure
+     */
+    public function setCity($city) {
+        $stmt = $this->pdo->prepare("UPDATE `".constants::db_prefix."contact` SET `city`=? WHERE `id`=?");
+        $stmt->execute(array($city, $this->id));
+        if ($stmt->rowCount() == 1) {
+            $this->city = $city;
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Get the country of the contact
+     * 
+     * @return string                   The country
+     */
+    public function getCountry() {
+        return $this->country;
+    }
+
+    /**
+     * Set the country of the contact
+     * 
+     * @param string $country           The new country for the contact
+     * 
+     * @throws PDOException             If something went wrong with the database
+     * 
+     * @return bool                     True on succes, false on failure
+     */
+    public function setCountry($country) {
+        $stmt = $this->pdo->prepare("UPDATE `".constants::db_prefix."contact` SET `country`=? WHERE `id`=?");
+        $stmt->execute(array($country, $this->id));
+        if ($stmt->rowCount() == 1) {
+            $this->country = $country;
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Get the language of the contact
+     * 
+     * @return string                   The language
+     */
+    public function getLanguage() {
+        return $this->language;
+    }
+
+    /**
+     * Set the language of the contact
+     * 
+     * @param string $language          The new language for the contact
+     * 
+     * @throws PDOException             If something went wrong with the database
+     * 
+     * @return bool                     True on succes, false on failure
+     */
+    public function setLanguage($language) {
+        $stmt = $this->pdo->prepare("UPDATE `".constants::db_prefix."contact` SET `language`=? WHERE `id`=?");
+        $stmt->execute(array($language, $this->id));
+        if ($stmt->rowCount() == 1) {
+            $this->language = $language;
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    //------------------------------------------------------------------------------
+    // Other functions
+    //------------------------------------------------------------------------------
+
+    /**
+     * Remove this contact from the database
+     * 
+     * If this doesn't succeed (i.e. false is returned), that means the contact was removed manually or by another instance of this class
+     * 
+     * @throws PDOException             If something went wrong with the database
+     * 
+     * @return bool                     True on success, false on failure
+     */
+    public function delete() {
+        $stmt = $this->pdo->prepare("DELETE FROM `".constants::db_prefix."contact` WHERE `id`=?");
+        $stmt->execute(array($this->id));
+        if ($stmt->rowCount() != 1) {
+            return false;
+        } else {
+            return true;
+        }
+    }
+
+    /**
+     * Make a new offer for this contact
+     * 
+     * @throws PDOException             If something went wrong with the database
+     * @throws Exception                If there was a problem with the input
+     * 
+     * @return offer                    A new instance of the offer class containing the new offer
+     */
+    public function createOffer() {
+        $stmt = $this->pdo->prepare("INSERT INTO `".constants::db_prefix."offer` (`contactId`) VALUES (?)");
+        $stmt->execute(array($this->id));
+        if ($stmt->rowCount() == 1) {
+            return new offer($this->pdo, $this->pdo->lastInsertId());
+        } else {
+            $error = $stmt->errorInfo();
+            throw new Exception($error[2]);
+        }
+    }
+}
diff --git a/docs/files/correspondence.class.html b/docs/files/correspondence.class.html
new file mode 100644
index 0000000..f98c4fd
--- /dev/null
+++ b/docs/files/correspondence.class.html
@@ -0,0 +1,261 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"/>
+    <meta charset="utf-8"/>
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+    <meta name="author" content=""/>
+    <meta name="description" content=""/>
+
+    <link href="../css/bootstrap-combined.no-icons.min.css" rel="stylesheet">
+    <link href="../css/font-awesome.min.css" rel="stylesheet">
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+    <link href="../css/template.css" rel="stylesheet" media="all"/>
+    
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+                var extension = (src.match(/\.(\w+)$/) || [, ''])[1];
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+
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+            });
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+        $(document).ready(function(){
+            loadExternalCodeSnippets();
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+            loadExternalCodeSnippets();
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+                                    <i class="icon-list-alt"></i>&#160;Class hierarchy diagram
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+                                </a>
+                            </li>
+                            <li>
+                                <a href="../reports/deprecated.html">
+                                                                                                            <i class="icon-list-alt"></i>&#160;Deprecated <span class="label label-info pull-right">0</span>
+                                </a>
+                            </li>
+                        </ul>
+                    </li>
+                </ul>
+            </div>
+        </div>
+    </div>
+    <!--<div class="go_to_top">-->
+    <!--<a href="#___" style="color: inherit">Back to top&#160;&#160;<i class="icon-upload icon-white"></i></a>-->
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+</div>
+
+<div id="___" class="container-fluid">
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+                                <a href="../namespaces/default.html" style="margin-left: 30px; padding-left: 0">\</a>
+            </div>
+            <div id="namespace-1775654533" class="accordion-body collapse in">
+                <div class="accordion-inner">
+
+                    
+                    <ul>
+                                                                                                    <li class="class"><a href="../classes/assignment.html">assignment</a></li>
+                                                    <li class="class"><a href="../classes/BusinessAdmin.html">BusinessAdmin</a></li>
+                                                    <li class="class"><a href="../classes/client.html">client</a></li>
+                                                    <li class="class"><a href="../classes/constants.html">constants</a></li>
+                                                    <li class="class"><a href="../classes/contact.html">contact</a></li>
+                                                    <li class="class"><a href="../classes/correspondence.html">correspondence</a></li>
+                                                    <li class="class"><a href="../classes/file.html">file</a></li>
+                                                    <li class="class"><a href="../classes/offer.html">offer</a></li>
+                                                    <li class="class"><a href="../classes/response.html">response</a></li>
+                                            </ul>
+                </div>
+            </div>
+        </div>
+    </div>
+
+        </div>
+    </section>
+    <section class="row-fluid">
+        <div class="span10 offset2">
+            <div class="row-fluid">
+                <div class="span8 content file">
+                    <nav>
+                                                                    </nav>
+
+                    <a href="#source-view" role="button" class="pull-right btn" data-toggle="modal"><i class="icon-code"></i></a>
+                    <h1><small></small>correspondence.class.php</h1>
+                    <p><em></em></p>
+                    
+
+                    
+                    
+                                        <h2>Classes</h2>
+                    <table class="table table-hover">
+                                            <tr>
+                            <td><a href="../classes/correspondence.html">correspondence</a></td>
+                            <td><em>An extension of FPDF to generate personalized correspondence PDFs</em></td>
+                        </tr>
+                                        </table>
+                                    </div>
+
+                <aside class="span4 detailsbar">
+                    <dl>
+                                                    <dt>Package</dt>
+                            <dd><div class="namespace-wrapper">\Default</div></dd>
+                        
+                        
+                    </dl>
+                    <h2>Tags</h2>
+                    <table class="table table-condensed">
+                                                    <tr><td colspan="2"><em>None found</em></td></tr>
+                                            </table>
+
+                </aside>
+            </div>
+
+            
+            
+        </div>
+    </section>
+
+    <div id="source-view" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="source-view-label" aria-hidden="true">
+        <div class="modal-header">
+            <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
+            <h3 id="source-view-label"></h3>
+        </div>
+        <div class="modal-body">
+            <pre data-src="../files/correspondence.class.php.txt" class="language-php line-numbers"></pre>
+        </div>
+    </div>
+
+    <footer class="row-fluid">
+        <section class="span10 offset2">
+            <section class="row-fluid">
+                <section class="span10 offset1">
+                    <section class="row-fluid footer-sections">
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+                                                        <h1><i class="icon-code"></i></h1>
+                            <div>
+                                <ul>
+                                                                    </ul>
+                            </div>
+                        </section>
+                        <section class="span4">
+                                                        <h1><i class="icon-bar-chart"></i></h1>
+                            <div>
+                                <ul>
+                                    <li><a href="../graphs/class.html">Class Hierarchy Diagram</a></li>
+                                </ul>
+                            </div>
+                        </section>
+                        <section class="span4">
+                                                        <h1><i class="icon-pushpin"></i></h1>
+                            <div>
+                                <ul>
+                                    <li><a href="../reports/errors.html">Errors</a></li>
+                                    <li><a href="../reports/markers.html">Markers</a></li>
+                                </ul>
+                            </div>
+                        </section>
+                    </section>
+                </section>
+            </section>
+            <section class="row-fluid">
+                <section class="span10 offset1">
+                    <hr />
+                    Documentation is powered by <a href="http://www.phpdoc.org/">phpDocumentor </a> and authored
+                    on February 7th, 2015 at 21:04.
+                </section>
+            </section>
+        </section>
+    </footer>
+</div>
+
+</body>
+</html>
diff --git a/docs/files/correspondence.class.php.txt b/docs/files/correspondence.class.php.txt
new file mode 100644
index 0000000..f6b66bb
--- /dev/null
+++ b/docs/files/correspondence.class.php.txt
@@ -0,0 +1,269 @@
+<?php
+/**
+ * This file provides the correspondence class
+ * 
+ * @author Camil Staps
+ * 
+ * BusinessAdmin: administrative software for small companies
+ * Copyright (C) 2015 Camil Staps (ViviSoft)
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+require_once('fpdf.php');
+
+/**
+ * An extension of FPDF to generate personalized correspondence PDFs
+ */
+class correspondence extends FPDF {
+    /**
+     * @var $contact                Holds the contact this correspondence will be sent to
+     * @var $language               Holds the language this correspondence should be sent in
+     */
+    var $contact, $language;
+    
+    /**
+     * If you'd want, you could change these constants to encode an RGB colour for headings in your PDFs
+     */
+    const HEAD_RED = 0;
+    const HEAD_GREEN = 0;
+    const HEAD_BLUE = 0;
+
+    /**
+     * Array holding the translations
+     * 
+     * @see _()                     A function to translate
+     */
+    protected static $translations = array(
+        'adres'         => array(
+                        'en' => 'Address',
+                        'nl' => 'Adres'), 
+        'amount'        => array(
+                        'en' => 'Amount',
+                        'nl' => 'Subtotaal'), 
+        'amount-due'    => array(
+                        'en' => 'Total amount due',
+                        'nl' => 'Te voldoen'), 
+        'biccode'       => array(
+                        'en' => 'The BIC code of our bank is %%.',
+                        'nl' => 'De BIC-code van de bank is %%.'), 
+        'btwnr'         => array(
+                        'en' => 'VAT nr',
+                        'nl' => 'BTW nr'), 
+        'description'   => array(
+                        'en' => 'Description',
+                        'nl' => 'Omschrijving'), 
+        'due-date'      => array(
+                        'en' => 'Due date',
+                        'nl' => 'Vervaldatum'), 
+        'email'         => array(
+                        'en' => 'Email',
+                        'nl' => 'Email'),
+        'iban'          => array(
+                        'en' => 'IBAN',
+                        'nl' => 'IBAN'),
+        'invoice'       => array(
+                        'en' => 'Invoice',
+                        'nl' => 'Factuur'), 
+        'invoice-date'  => array(
+                        'en' => 'Invoice date',
+                        'nl' => 'Factuurdatum'), 
+        'invoice-nr'    => array(
+                        'en' => 'Invoice number',
+                        'nl' => 'Factuurnummer'), 
+        'price-excl'    => array(
+                        'en' => 'Price excl.',
+                        'nl' => 'Prijs excl.'), 
+        'price-incl'    => array(
+                        'en' => 'Price incl.',
+                        'nl' => 'Prijs incl.'), 
+        'request'       =>  array(
+                        'en' => 'You are kindly requested to transfer the total amount before the due date to the provided IBAN nr.',
+                        'nl' => 'U wordt vriendelijk verzocht het te voldoen bedrag voor de vervaldatum van de factuur over te maken naar opgegeven IBAN-nummer.'), 
+        'tel-nr'        => array(
+                        'en' => 'Tel.',
+                        'nl' => 'Tel.'),
+        'total'         => array(
+                        'en' => 'Total',
+                        'nl' => 'Totaal'), 
+        'vat'           => array(
+                        'en' => 'VAT',
+                        'nl' => 'BTW'), 
+    );
+
+    /**
+     * Translate a string
+     * 
+     * @see $translations           The array holding the translations
+     * 
+     * @param string $key           The string to translate
+     * @param string $lang          The language to translate to (two-letter code)
+     * 
+     * @return string               The translated string
+     */
+    public function _($key) {
+        if (!array_key_exists($key, self::$translations)) 
+            return $key;
+        return self::$translations[$key][$this->language];
+    }
+    
+    /**
+     * Create a new PDF
+     * 
+     * @param string $orientation   See the FPDF class specs
+     * @param string $unit          See the FPDF class specs
+     * @param string $size          See the FPDF class specs
+     */
+    function __construct($orientation='P',$unit='mm',$size='A4') {
+        $this->FPDF($orientation,$unit,$size);
+        
+        $this->SetMargins(30,20,20);
+        $this->SetAuthor(constants::invoice_name);
+        $this->SetCreator('BusinessAdmin Correspondence Generator');
+        $this->SetDisplayMode('fullpage','continuous');
+    }
+
+    /**
+     * Set the language of the correspondence (used to translate stuff)
+     * 
+     * @param string $lang          The language, two letter code ('en', 'nl', ...)
+     */
+    function SetLangauge($lang) {
+        $supported = array('nl', 'en');
+        if (!in_array($lang, $supported)) {
+            throw new Exception("Language not supported");
+        } else {
+            $this->language = $lang;
+        }
+    }
+    
+    /**
+     * Set the contact to whom this correspondence will be sent (used for the address)
+     * 
+     * @param contact $contact      The contact
+     */
+    function SetContact($contact) {
+        $this->contact = $contact;
+
+        $this->language = $contact->getLanguage();
+    }
+
+    /**
+     * Makes a header with your details and the address of the contact
+     */
+    function CorrespondenceHeader() {
+        if (file_exists(constants::files_folder . 'logo-correspondence.png')) {
+            $this->Image(constants::files_folder . 'logo-correspondence.png',30,20,50);
+        }
+        
+        $this->SetFont('Helvetica','',7);
+        $this->Cell(110,20);
+        $this->Cell(12,1,' ','T');
+        $this->Cell(2,1);
+        $this->Cell(35,1,' ','T');
+        $this->Ln();
+        
+        $this->Cell(110,3.5);
+        $this->SetFont('','B');
+        $this->Cell(12,3.5,$this->_('adres'),'',0,'R');
+        $this->Cell(2,3.5);
+        $this->SetFont('','');
+        $this->Cell(35,3.5, constants::invoice_name);
+        $this->Ln();
+        
+        $this->Cell(124,3.5);
+        $this->Cell(35,3.5, constants::invoice_address_1);
+        $this->Ln();
+        $this->Cell(124,3.5);
+        $this->Cell(35,3.5, constants::invoice_address_2);
+        $this->Ln();
+        $this->Cell(124,3.5);
+        $this->Cell(35,3.5, constants::invoice_address_3);
+        $this->Ln();
+        $this->Cell(160,1.5);
+        $this->Ln();
+        $this->Cell(110,3.5);
+        $this->SetFont('','B');
+        $this->Cell(12,3.5,$this->_('btwnr'),'',0,'R');
+        $this->Cell(2,3.5);
+        $this->SetFont('','');
+        $this->Cell(35,3.5, constants::invoice_tax_nr);
+        $this->Ln();
+        $this->Cell(160,1.5);
+        $this->Ln();
+        $this->Cell(110,3.5);
+        $this->SetFont('','B');
+        $this->Cell(12,3.5, $this->_('iban'),'',0,'R');
+        $this->Cell(2,3.5);
+        $this->SetFont('','');
+        $this->Cell(35,3.5, constants::invoice_iban);
+        $this->Ln();
+        $this->Cell(160,1.5);
+        $this->Ln();
+        $this->Cell(110,3.5);
+        $this->SetFont('','B');
+        $this->Cell(12,3.5, $this->_('tel-nr'),'',0,'R');
+        $this->Cell(2,3.5);
+        $this->SetFont('','',7);
+        $this->Cell(35,3.5, constants::invoice_tel_nr);
+        $this->Ln();
+        $this->Cell(110,3.5);
+        $this->SetFont('','B');
+        $this->Cell(12,3.5, $this->_('email'),'',0,'R');
+        $this->Cell(2,3.5);
+        $this->SetFont('','');
+        $this->Cell(35,3.5, constants::invoice_email);
+        $this->Ln();
+        $this->Cell(110,1);
+        $this->Cell(12,1,' ','B');
+        $this->Cell(2,1);
+        $this->Cell(35,1,' ','B');
+        $this->Ln();
+        $this->Cell(160,15);
+        $this->Ln();
+        
+        $this->SetFont('','',11);
+        $this->SetXY(30,56.5);
+        $this->Cell(90,5.5,utf8_decode($this->contact->getName()));
+        $this->Ln();
+        $this->SetXY(30,61.5);
+        $this->Cell(90,5.5,utf8_decode($this->contact->getAddress()));
+        $this->Ln();
+        $this->SetXY(30,66.5);
+        $this->Cell(90,5.5,utf8_decode($this->contact->getPostalCode().' '.$this->contact->getCity()));
+        $this->Ln();
+        $this->SetXY(30,71.5);
+        $this->Cell(90,5.5,utf8_decode($this->contact->getCountry()));
+        $this->Ln();
+    }
+    
+    /**
+     * Put PDF information
+     */
+    function _putinfo()
+    {
+        $this->_out('/Producer '.$this->_textstring('BusinessAdmin Correspondence Generator'));
+        if(!empty($this->title))
+            $this->_out('/Title '.$this->_textstring($this->title));
+        if(!empty($this->subject))
+            $this->_out('/Subject '.$this->_textstring($this->subject));
+        if(!empty($this->author))
+            $this->_out('/Author '.$this->_textstring($this->author));
+        if(!empty($this->keywords))
+            $this->_out('/Keywords '.$this->_textstring($this->keywords));
+        if(!empty($this->creator))
+            $this->_out('/Creator '.$this->_textstring($this->creator));
+        $this->_out('/CreationDate '.$this->_textstring('D:'.@date('YmdHis')));
+    }
+}
diff --git a/docs/files/file.class.html b/docs/files/file.class.html
new file mode 100644
index 0000000..80fda27
--- /dev/null
+++ b/docs/files/file.class.html
@@ -0,0 +1,280 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"/>
+    <meta charset="utf-8"/>
+    <title>API Documentation</title>
+    <meta name="author" content=""/>
+    <meta name="description" content=""/>
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+                        </a>
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+                            <li>
+                                <a href="../graphs/class.html">
+                                    <i class="icon-list-alt"></i>&#160;Class hierarchy diagram
+                                </a>
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+                                </a>
+                            </li>
+                            <li>
+                                <a href="../reports/markers.html">
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        <i class="icon-list-alt"></i>&#160;Markers <span class="label label-info pull-right">1</span>
+                                </a>
+                            </li>
+                            <li>
+                                <a href="../reports/deprecated.html">
+                                                                                                            <i class="icon-list-alt"></i>&#160;Deprecated <span class="label label-info pull-right">0</span>
+                                </a>
+                            </li>
+                        </ul>
+                    </li>
+                </ul>
+            </div>
+        </div>
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+    <!--<div class="go_to_top">-->
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+                <div class="accordion-inner">
+
+                    
+                    <ul>
+                                                                                                    <li class="class"><a href="../classes/assignment.html">assignment</a></li>
+                                                    <li class="class"><a href="../classes/BusinessAdmin.html">BusinessAdmin</a></li>
+                                                    <li class="class"><a href="../classes/client.html">client</a></li>
+                                                    <li class="class"><a href="../classes/constants.html">constants</a></li>
+                                                    <li class="class"><a href="../classes/contact.html">contact</a></li>
+                                                    <li class="class"><a href="../classes/correspondence.html">correspondence</a></li>
+                                                    <li class="class"><a href="../classes/file.html">file</a></li>
+                                                    <li class="class"><a href="../classes/offer.html">offer</a></li>
+                                                    <li class="class"><a href="../classes/response.html">response</a></li>
+                                            </ul>
+                </div>
+            </div>
+        </div>
+    </div>
+
+        </div>
+    </section>
+    <section class="row-fluid">
+        <div class="span10 offset2">
+            <div class="row-fluid">
+                <div class="span8 content file">
+                    <nav>
+                                                                    </nav>
+
+                    <a href="#source-view" role="button" class="pull-right btn" data-toggle="modal"><i class="icon-code"></i></a>
+                    <h1><small></small>file.class.php</h1>
+                    <p><em>Provides the file class, an interface to the file table in the database</em></p>
+                    
+
+                    
+                    
+                                        <h2>Classes</h2>
+                    <table class="table table-hover">
+                                            <tr>
+                            <td><a href="../classes/file.html">file</a></td>
+                            <td><em>An interface to the file table in the database</em></td>
+                        </tr>
+                                        </table>
+                                    </div>
+
+                <aside class="span4 detailsbar">
+                    <dl>
+                                                    <dt>Package</dt>
+                            <dd><div class="namespace-wrapper">\Default</div></dd>
+                        
+                        
+                    </dl>
+                    <h2>Tags</h2>
+                    <table class="table table-condensed">
+                                                    <tr>
+                                <th>
+                                    author
+                                </th>
+                                <td>
+                                                                            <p>Camil Staps</p>
+<p>BusinessAdmin: administrative software for small companies
+Copyright (C) 2015 Camil Staps (ViviSoft)</p>
+<p>This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.</p>
+<p>This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.</p>
+<p>You should have received a copy of the GNU General Public License
+along with this program.  If not, see <a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>.</p>
+                                                                    </td>
+                            </tr>
+                                            </table>
+
+                </aside>
+            </div>
+
+            
+            
+        </div>
+    </section>
+
+    <div id="source-view" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="source-view-label" aria-hidden="true">
+        <div class="modal-header">
+            <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
+            <h3 id="source-view-label"></h3>
+        </div>
+        <div class="modal-body">
+            <pre data-src="../files/file.class.php.txt" class="language-php line-numbers"></pre>
+        </div>
+    </div>
+
+    <footer class="row-fluid">
+        <section class="span10 offset2">
+            <section class="row-fluid">
+                <section class="span10 offset1">
+                    <section class="row-fluid footer-sections">
+                        <section class="span4">
+                                                        <h1><i class="icon-code"></i></h1>
+                            <div>
+                                <ul>
+                                                                    </ul>
+                            </div>
+                        </section>
+                        <section class="span4">
+                                                        <h1><i class="icon-bar-chart"></i></h1>
+                            <div>
+                                <ul>
+                                    <li><a href="../graphs/class.html">Class Hierarchy Diagram</a></li>
+                                </ul>
+                            </div>
+                        </section>
+                        <section class="span4">
+                                                        <h1><i class="icon-pushpin"></i></h1>
+                            <div>
+                                <ul>
+                                    <li><a href="../reports/errors.html">Errors</a></li>
+                                    <li><a href="../reports/markers.html">Markers</a></li>
+                                </ul>
+                            </div>
+                        </section>
+                    </section>
+                </section>
+            </section>
+            <section class="row-fluid">
+                <section class="span10 offset1">
+                    <hr />
+                    Documentation is powered by <a href="http://www.phpdoc.org/">phpDocumentor </a> and authored
+                    on February 7th, 2015 at 21:04.
+                </section>
+            </section>
+        </section>
+    </footer>
+</div>
+
+</body>
+</html>
diff --git a/docs/files/file.class.php.txt b/docs/files/file.class.php.txt
new file mode 100644
index 0000000..27d64dd
--- /dev/null
+++ b/docs/files/file.class.php.txt
@@ -0,0 +1,148 @@
+<?php
+/**
+ * Provides the file class, an interface to the file table in the database
+ * 
+ * @author Camil Staps
+ * 
+ * BusinessAdmin: administrative software for small companies
+ * Copyright (C) 2015 Camil Staps (ViviSoft)
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * An interface to the file table in the database
+ */
+class file {
+    /**
+     * @var PDO $pdo                The PDO class for database communication
+     * @var int $id                 The id of the file
+     * @var string $filename        The relative path to the file
+     */
+    protected $pdo, $id, $filename;
+
+    /**
+     * Create a new instance
+     * 
+     * @param PDO $pdo              The PDO class, to access the database
+     * @param int $id               The id of the file to fetch
+     * 
+     * @throws PDOException         If something went wrong with the database
+     * @throws Exception            If the file could not be found
+     */
+    public function __construct($pdo, $id) {
+        $this->pdo = $pdo;
+
+        $stmt = $this->pdo->prepare("SELECT * FROM `".constants::db_prefix."file` WHERE `id`=?");
+        $stmt->execute(array($id));
+        if ($stmt->rowCount() == 0) {
+            throw new Exception("The file with id '$id' could not be found.");
+        }
+        $file = $stmt->fetch(PDO::FETCH_ASSOC);
+
+        $this->id = $file['id'];
+        $this->filename = $file['filename'];
+    }
+
+    //------------------------------------------------------------------------------
+    // Getters and setters
+    //------------------------------------------------------------------------------
+
+    /**
+     * Get the ID of the file
+     * 
+     * @return int                  The ID
+     */
+    public function getId() {
+        return $this->id;
+    }
+
+    /**
+     * Get the relative filename of the file
+     * 
+     * @see file::getFilenamePath   To get the full internal path to the file
+     * @see file::getFilenameURI    To get the full external path to the file
+     * 
+     * @return string               The filename
+     */
+    public function getFilename() {
+        return $this->filename;
+    }
+
+    /**
+     * Get the full internal path to the file
+     * 
+     * @see file::getFilename       To get the relative filename
+     * @see file::getFilenameURI    To get the full external path to the file
+     * 
+     * @return string               The path
+     */
+    public function getFilenamePath() {
+        return constants::files_folder . $this->filename;
+    }
+
+    /**
+     * Get the full external path to the file
+     * 
+     * @see file::getFilename       To get the relative filename
+     * @see file::getFilenamePath   To get the full internal path to the file
+     * 
+     * @return string               The URI
+     */
+    public function getFilenameURI() {
+        return constants::files_folder_external . $this->filename;
+    }
+
+    //------------------------------------------------------------------------------
+    // Other functions
+    //------------------------------------------------------------------------------
+
+    /**
+     * Move this file to the trash and delete all records for it
+     * 
+     * Physically, this moves the file to a trash folder
+     * Then, the file will be removed from the file table in the database
+     * Any appendices linking to this file with fileId will have fileId NULL
+     * Any offers linking to this file with invoice_fileId will have invoice_fileId NULL
+     * 
+     * @throws PDOException         If there's something wrong with the database
+     * 
+     * @return bool                 True on success, false on failure
+     */
+    public function delete() {
+        // Try to move the file to trash
+        $newname = pathinfo($this->filename, PATHINFO_FILENAME) . '--' . date('Y-m-d.H.i.s.') . pathinfo($this->filename, PATHINFO_EXTENSION);
+        $newdir = pathinfo($this->getFilenamePath(), PATHINFO_DIRNAME) . '/' . constants::files_folder_trash . '/';
+        if (!file_exists($newdir)) {
+            if (!mkdir($newdir)) {
+                return false;
+            }
+        }
+        if (!(@rename($this->getFilenamePath(), $newdir . $newname))) {
+            return false;
+        }
+
+        // Remove offers linked by invoice_fileId
+        $this->pdo->query("UPDATE `".constants::db_prefix."offer` SET `invoice_fileId`=NULL WHERE `invoice_fileId`={$this->id}");
+
+        // Remove the record of the file
+        $stmt = $this->pdo->prepare("DELETE FROM `".constants::db_prefix."file` WHERE `id`=?");
+        $stmt->execute(array($this->id));
+        if ($stmt->rowCount() == 1) {
+            return true;
+        } else {
+            return false;
+        }
+    }
+}
diff --git a/docs/files/offer.class.html b/docs/files/offer.class.html
new file mode 100644
index 0000000..20dc299
--- /dev/null
+++ b/docs/files/offer.class.html
@@ -0,0 +1,280 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"/>
+    <meta charset="utf-8"/>
+    <title>API Documentation</title>
+    <meta name="author" content=""/>
+    <meta name="description" content=""/>
+
+    <link href="../css/bootstrap-combined.no-icons.min.css" rel="stylesheet">
+    <link href="../css/font-awesome.min.css" rel="stylesheet">
+    <link href="../css/prism.css" rel="stylesheet" media="all"/>
+    <link href="../css/template.css" rel="stylesheet" media="all"/>
+    
+    <!--[if lt IE 9]>
+    <script src="../js/html5.js"></script>
+    <![endif]-->
+    <script src="../js/jquery-1.11.0.min.js"></script>
+    <script src="../js/ui/1.10.4/jquery-ui.min.js"></script>
+    <script src="../js/bootstrap.min.js"></script>
+    <script src="../js/jquery.smooth-scroll.js"></script>
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+    <!-- TODO: Add http://jscrollpane.kelvinluck.com/ to style the scrollbars for browsers not using webkit-->
+        <script type="text/javascript">
+        function loadExternalCodeSnippets() {
+            Array.prototype.slice.call(document.querySelectorAll('pre[data-src]')).forEach(function (pre) {
+                var src = pre.getAttribute('data-src');
+                var extension = (src.match(/\.(\w+)$/) || [, ''])[1];
+                var language = 'php';
+
+                var code = document.createElement('code');
+                code.className = 'language-' + language;
+
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+
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+
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+
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+
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+                    if (xhr.readyState == 4) {
+
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+                            code.textContent = xhr.responseText;
+
+                            Prism.highlightElement(code);
+                        }
+                        else if (xhr.status >= 400) {
+                            code.textContent = '✖ Error ' + xhr.status + ' while fetching file: ' + xhr.statusText;
+                        }
+                        else {
+                            code.textContent = '✖ Error: File does not exist or is empty';
+                        }
+                    }
+                };
+
+                xhr.send(null);
+            });
+        }
+
+        $(document).ready(function(){
+            loadExternalCodeSnippets();
+        });
+        $('#source-view').on('shown', function () {
+            loadExternalCodeSnippets();
+        })
+    </script>
+
+    <link rel="shortcut icon" href="../images/favicon.ico"/>
+    <link rel="apple-touch-icon" href="../images/apple-touch-icon.png"/>
+    <link rel="apple-touch-icon" sizes="72x72" href="../images/apple-touch-icon-72x72.png"/>
+    <link rel="apple-touch-icon" sizes="114x114" href="../images/apple-touch-icon-114x114.png"/>
+</head>
+<body>
+
+<div class="navbar navbar-fixed-top">
+    <div class="navbar-inner">
+        <div class="container">
+            <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
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+            </a>
+            <a class="brand" href="../index.html">API Documentation</a>
+
+            <div class="nav-collapse">
+                <ul class="nav pull-right">
+                                        <li class="dropdown" id="charts-menu">
+                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
+                            Charts <b class="caret"></b>
+                        </a>
+                        <ul class="dropdown-menu">
+                            <li>
+                                <a href="../graphs/class.html">
+                                    <i class="icon-list-alt"></i>&#160;Class hierarchy diagram
+                                </a>
+                            </li>
+                        </ul>
+                    </li>
+                    <li class="dropdown" id="reports-menu">
+                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
+                            Reports <b class="caret"></b>
+                        </a>
+                        <ul class="dropdown-menu">
+                            <li>
+                                <a href="../reports/errors.html">
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        <i class="icon-list-alt"></i>&#160;Errors <span class="label label-info pull-right">50</span>
+                                </a>
+                            </li>
+                            <li>
+                                <a href="../reports/markers.html">
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        <i class="icon-list-alt"></i>&#160;Markers <span class="label label-info pull-right">1</span>
+                                </a>
+                            </li>
+                            <li>
+                                <a href="../reports/deprecated.html">
+                                                                                                            <i class="icon-list-alt"></i>&#160;Deprecated <span class="label label-info pull-right">0</span>
+                                </a>
+                            </li>
+                        </ul>
+                    </li>
+                </ul>
+            </div>
+        </div>
+    </div>
+    <!--<div class="go_to_top">-->
+    <!--<a href="#___" style="color: inherit">Back to top&#160;&#160;<i class="icon-upload icon-white"></i></a>-->
+    <!--</div>-->
+</div>
+
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+        <section class="row-fluid">
+        <div class="span2 sidebar">
+                                <div class="accordion" style="margin-bottom: 0">
+        <div class="accordion-group">
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+                                <a href="../namespaces/default.html" style="margin-left: 30px; padding-left: 0">\</a>
+            </div>
+            <div id="namespace-563987229" class="accordion-body collapse in">
+                <div class="accordion-inner">
+
+                    
+                    <ul>
+                                                                                                    <li class="class"><a href="../classes/assignment.html">assignment</a></li>
+                                                    <li class="class"><a href="../classes/BusinessAdmin.html">BusinessAdmin</a></li>
+                                                    <li class="class"><a href="../classes/client.html">client</a></li>
+                                                    <li class="class"><a href="../classes/constants.html">constants</a></li>
+                                                    <li class="class"><a href="../classes/contact.html">contact</a></li>
+                                                    <li class="class"><a href="../classes/correspondence.html">correspondence</a></li>
+                                                    <li class="class"><a href="../classes/file.html">file</a></li>
+                                                    <li class="class"><a href="../classes/offer.html">offer</a></li>
+                                                    <li class="class"><a href="../classes/response.html">response</a></li>
+                                            </ul>
+                </div>
+            </div>
+        </div>
+    </div>
+
+        </div>
+    </section>
+    <section class="row-fluid">
+        <div class="span10 offset2">
+            <div class="row-fluid">
+                <div class="span8 content file">
+                    <nav>
+                                                                    </nav>
+
+                    <a href="#source-view" role="button" class="pull-right btn" data-toggle="modal"><i class="icon-code"></i></a>
+                    <h1><small></small>offer.class.php</h1>
+                    <p><em>Provides the offer class, an interface to the offer table in the database</em></p>
+                    
+
+                    
+                    
+                                        <h2>Classes</h2>
+                    <table class="table table-hover">
+                                            <tr>
+                            <td><a href="../classes/offer.html">offer</a></td>
+                            <td><em>An interface to the offer table in the database</em></td>
+                        </tr>
+                                        </table>
+                                    </div>
+
+                <aside class="span4 detailsbar">
+                    <dl>
+                                                    <dt>Package</dt>
+                            <dd><div class="namespace-wrapper">\Default</div></dd>
+                        
+                        
+                    </dl>
+                    <h2>Tags</h2>
+                    <table class="table table-condensed">
+                                                    <tr>
+                                <th>
+                                    author
+                                </th>
+                                <td>
+                                                                            <p>Camil Staps</p>
+<p>BusinessAdmin: administrative software for small companies
+Copyright (C) 2015 Camil Staps (ViviSoft)</p>
+<p>This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.</p>
+<p>This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.</p>
+<p>You should have received a copy of the GNU General Public License
+along with this program.  If not, see <a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>.</p>
+                                                                    </td>
+                            </tr>
+                                            </table>
+
+                </aside>
+            </div>
+
+            
+            
+        </div>
+    </section>
+
+    <div id="source-view" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="source-view-label" aria-hidden="true">
+        <div class="modal-header">
+            <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
+            <h3 id="source-view-label"></h3>
+        </div>
+        <div class="modal-body">
+            <pre data-src="../files/offer.class.php.txt" class="language-php line-numbers"></pre>
+        </div>
+    </div>
+
+    <footer class="row-fluid">
+        <section class="span10 offset2">
+            <section class="row-fluid">
+                <section class="span10 offset1">
+                    <section class="row-fluid footer-sections">
+                        <section class="span4">
+                                                        <h1><i class="icon-code"></i></h1>
+                            <div>
+                                <ul>
+                                                                    </ul>
+                            </div>
+                        </section>
+                        <section class="span4">
+                                                        <h1><i class="icon-bar-chart"></i></h1>
+                            <div>
+                                <ul>
+                                    <li><a href="../graphs/class.html">Class Hierarchy Diagram</a></li>
+                                </ul>
+                            </div>
+                        </section>
+                        <section class="span4">
+                                                        <h1><i class="icon-pushpin"></i></h1>
+                            <div>
+                                <ul>
+                                    <li><a href="../reports/errors.html">Errors</a></li>
+                                    <li><a href="../reports/markers.html">Markers</a></li>
+                                </ul>
+                            </div>
+                        </section>
+                    </section>
+                </section>
+            </section>
+            <section class="row-fluid">
+                <section class="span10 offset1">
+                    <hr />
+                    Documentation is powered by <a href="http://www.phpdoc.org/">phpDocumentor </a> and authored
+                    on February 7th, 2015 at 21:04.
+                </section>
+            </section>
+        </section>
+    </footer>
+</div>
+
+</body>
+</html>
diff --git a/docs/files/offer.class.php.txt b/docs/files/offer.class.php.txt
new file mode 100644
index 0000000..d07215b
--- /dev/null
+++ b/docs/files/offer.class.php.txt
@@ -0,0 +1,627 @@
+<?php
+/**
+ * Provides the offer class, an interface to the offer table in the database
+ * 
+ * @author Camil Staps
+ * 
+ * BusinessAdmin: administrative software for small companies
+ * Copyright (C) 2015 Camil Staps (ViviSoft)
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * An interface to the offer table in the database
+ */
+class offer {
+    /**
+     * @var pdo $pdo                        The PDO class for database communication
+     * @var int $id                         The id of the offer
+     * @var int $contactId                  The id of the contact this offer is linked to
+     * @var int $start_date                 A UNIX timestamp of the start date
+     * @var int $end_date                   A UNIX timestamp of the end date
+     * @var int $invoice_date               A UNIX timestamp of the invoice date
+     * @var bool $accepted                  Whether the offer is accepted or not
+     * @var null|int $invoice_fileId        If an invoice has been generated, an the id of the file
+     * @var null|int $payment_received      A UNIX timestamp of the date the payment has been received
+     */
+    protected $pdo, $id, $contactId, $start_date, $end_date, $invoice_date, $accepted, $invoice_fileId, $payment_received;
+
+    const SUBTOTAL = 1;
+    const VAT = 2;
+    const TOTAL = 3;
+
+    /**
+     * Create a new instance
+     * 
+     * Blah
+     * 
+     * @param PDO $pdo                      The PDO class, to access the database
+     * @param int $id                       The id of the offer to fetch
+     * 
+     * @throws PDOException                 If something went wrong with the database
+     * @throws Exception                    If the offer could not be found
+     */
+    public function __construct($pdo, $id) {
+        $this->pdo = $pdo;
+
+        $stmt = $this->pdo->prepare("SELECT * FROM `".constants::db_prefix."offer` WHERE `id`=?");
+        $stmt->execute(array($id));
+        if ($stmt->rowCount() == 0) {
+            throw new Exception("The offer with id '$id' could not be found.");
+        }
+        $offer = $stmt->fetch(PDO::FETCH_ASSOC);
+
+        $this->id = $offer['id'];
+        $this->contactId = $offer['contactId'];
+        $this->start_date = strtotime($offer['start_date']);
+        $this->end_date = strtotime($offer['end_date']);
+        $this->invoice_date = strtotime($offer['invoice_date']);
+        $this->accepted = (bool) $offer['accepted'];
+        $this->invoice_fileId = $offer['invoice_fileId'];
+        $this->payment_received = ($offer['payment_received'] == null) ? null : strtotime($offer['payment_received']);
+    }
+
+    //------------------------------------------------------------------------------
+    // Getters and setters
+    //------------------------------------------------------------------------------
+
+    /**
+     * Get the ID of the offer
+     * 
+     * @return int                          The ID
+     */
+    public function getId() {
+        return $this->id;
+    }
+
+    /**
+     * Get the ID of the contact that this offer is linked to
+     * 
+     * @see offer::getContact()             This function returns the contact as an instance of the object class
+     * 
+     * @return int                          The ID
+     */
+    public function getContactId() {
+        return $this->contactId;
+    }
+
+    /**
+     * Get the contact that this offer is linked to
+     * 
+     * @see offer::getContactId()           This function returns just the id
+     * 
+     * @return contact                      The contact
+     */
+    public function getContact() {
+        return new contact($this->pdo, $this->contactId);
+    }
+
+    /**
+     * Get all assignment ids for this offer
+     * 
+     * @see offer::getAssignments()         This funtion returns instances of the assignment class instead of just the ids
+     * 
+     * @throws PDOException                 Is something went wrong with the database
+     * 
+     * @return int[]                        The ids
+     */
+    public function getAssignmentIds() {
+        $ids = array();
+        $assignments = $this->pdo->query("SELECT `id` FROM `".constants::db_prefix."assignment` WHERE `offerId`={$this->id}")->fetchAll(PDO::FETCH_ASSOC);
+        foreach ($assignments as $assignment) {
+            $ids[] = $assignment['id'];
+        }
+        return $ids;
+    }
+
+    /**
+     * Get all assignments for this offer
+     * 
+     * @see offer::getAssignmentIds()       This function returns just the ids of the assignments, and not instances of the assignment class
+     * 
+     * @throws PDOException                 If something went wrong with the database
+     * 
+     * @return assignment[]                 An array indexed by id of instances of the assignment class
+     */
+    public function getAssignments() {
+        $ids = $this->getAssignmentIds();
+        $assignments = array();
+        foreach ($ids as $id) {
+            $assignments[$id] = new assignment($this->pdo, $id);
+        }
+        return $assignments;
+    }
+
+    /**
+     * Get the start date of the assignment
+     * 
+     * @return int                          The start date as a UNIX timestamp
+     */
+    public function getStartDate() {
+        return $this->start_date;
+    }
+
+    /**
+     * Set the start date of the assignment
+     * 
+     * @param int $start_date               The new start date for the assignment as a UNIX timestamp
+     * 
+     * @throws PDOException                 If something went wrong with the database
+     * 
+     * @return bool                         True on succes, false on failure
+     */
+    public function setStartDate($start_date) {
+        $stmt = $this->pdo->prepare("UPDATE `".constants::db_prefix."offer` SET `start_date`=? WHERE `id`=?");
+        $stmt->execute(array(date('Y-m-d', $start_date), $this->id));
+        if ($stmt->rowCount() == 1) {
+            $this->start_date = $start_date;
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Get the end date of the assignment
+     * 
+     * @return int                          The end date as a UNIX timestamp
+     */
+    public function getEndDate() {
+        return $this->end_date;
+    }
+
+    /**
+     * Set the end date of the assignment
+     * 
+     * @param int $end_date                 The new end date for the assignment as a UNIX timestamp
+     * 
+     * @throws PDOException                 If something went wrong with the database
+     * 
+     * @return bool                         True on succes, false on failure
+     */
+    public function setEndDate($end_date) {
+        $stmt = $this->pdo->prepare("UPDATE `".constants::db_prefix."offer` SET `end_date`=? WHERE `id`=?");
+        $stmt->execute(array(date('Y-m-d', $end_date), $this->id));
+        if ($stmt->rowCount() == 1) {
+            $this->end_date = $end_date;
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Get the invoice date of the assignment
+     * 
+     * @return int                          The invoice date as a UNIX timestamp
+     */
+    public function getInvoiceDate() {
+        return $this->invoice_date;
+    }
+
+    /**
+     * Set the invoice date of the assignment
+     * 
+     * @param int $invoice_date             The new invoice date for the assignment as a UNIX timestamp
+     * 
+     * @throws PDOException                 If something went wrong with the database
+     * 
+     * @return bool                         True on succes, false on failure
+     */
+    public function setInvoiceDate($invoice_date) {
+        $stmt = $this->pdo->prepare("UPDATE `".constants::db_prefix."offer` SET `invoice_date`=? WHERE `id`=?");
+        $stmt->execute(array(date('Y-m-d', $invoice_date), $this->id));
+        if ($stmt->rowCount() == 1) {
+            $this->invoice_date = $invoice_date;
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Get the date the payment was received
+     * 
+     * @return int|null                     The date as a UNIX timestamp, or null if it wasn't received yet
+     */
+    public function getPaymentReceived() {
+        return $this->payment_received;
+    }
+
+    /**
+     * Set the payment received date of the assignment
+     * 
+     * @param int $payment_received         The new date the payment has been received as a UNIX timestamp
+     * 
+     * @throws PDOException                 If something went wrong with the database
+     * 
+     * @return bool                         True on succes, false on failure
+     */
+    public function setPaymentReceived($payment_received) {
+        $stmt = $this->pdo->prepare("UPDATE `".constants::db_prefix."offer` SET `payment_received`=? WHERE `id`=?");
+        $stmt->execute(array(date('Y-m-d', $payment_received), $this->id));
+        if ($stmt->rowCount() == 1) {
+            $this->payment_received = $payment_received;
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Check if the offer is accepted or not
+     * 
+     * @return bool                         True if the offer is accepted, false if not
+     */
+    public function isAccepted() {
+        return $this->accepted;
+    }
+
+    /**
+     * Toggle the `accepted' status of the offer
+     * 
+     * @throws PDOException                 If something went wrong with the database
+     * 
+     * @return bool                         True on success, false on failure
+     */
+    public function toggleAccepted() {
+        $stmt = $this->pdo->prepare("UPDATE `".constants::db_prefix."offer` SET `accepted`=? WHERE `id`=?");
+        $new_value = !$this->accepted;
+        $stmt->execute(array($new_value, $this->id));
+        if ($stmt->rowCount() == 1) {
+            $this->accepted = $new_value;
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Get the ID of the file that the invoice of this offer is linked to
+     * 
+     * @see offer::getInvoiceFile()         This function returns the file as an instance of the file class
+     * 
+     * @return int                          The ID
+     */
+    public function getInvoiceFileId() {
+        return $this->invoice_fileId;
+    }
+
+    /**
+     * Get the file that the invoice this offer is linked to
+     * 
+     * @see offer::getInvoiceId()           This function returns just the id
+     * 
+     * @return file|null                    The file, or null if it doesn't exist
+     */
+    public function getInvoiceFile() {
+        if ($this->invoice_fileId != null) {
+            return new file($this->pdo, $this->invoice_fileId);
+        } else {
+            return null;
+        }
+    }
+
+    /**
+     * Set the invoice file id of the assignment
+     * 
+     * @param int $invoice_fileId           The new invoice file id for the assignment
+     * 
+     * @throws PDOException                 If something went wrong with the database
+     * 
+     * @return bool                         True on succes, false on failure
+     */
+    public function setInvoiceFileId($invoice_fileId) {
+        $stmt = $this->pdo->prepare("UPDATE `".constants::db_prefix."offer` SET `invoice_fileId`=? WHERE `id`=?");
+        $stmt->execute(array($invoice_fileId, $this->id));
+        if ($stmt->rowCount() == 1) {
+            $this->invoice_fileId = $invoice_fileId;
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    //------------------------------------------------------------------------------
+    // Other functions
+    //------------------------------------------------------------------------------
+
+    /**
+     * Calculate a handy number about the invoice
+     * 
+     * Subtotal: the sum of the prices of the assignments excl. VAT
+     * 
+     * VAT: the sum of all the VAT from all the assignments
+     * 
+     * Total: the sum of subtotal and total
+     * 
+     * @param int $what                     Any of offer::SUBTOTAL, offer::VAT and offer::TOTAL
+     * @param int $round                    How many decimals to round the result on
+     * @param bool $format                  Whether to format the number nicely (for output) or not (for calculations)
+     * 
+     * @throws PDOException                 If something went wrong with the database
+     * 
+     * @return float|bool                   The calculated value rounded to $round decimals, or false on incorrect input
+     */
+    public function calculate($what = self::TOTAL, $round = 2, $format = true) {
+        $return = 0;
+        switch ($what) {
+            case self::SUBTOTAL:
+                $assignments = $this->getAssignments();
+                foreach ($assignments as $assignment) {
+                    $return += $assignment->calculate(assignment::SUBTOTAL, $round + 1, false);
+                }
+                break;
+            case self::VAT:
+                $assignments = $this->getAssignments();
+                foreach ($assignments as $assignment) {
+                    $return += $assignment->calculate(assignment::VAT, $round + 1, false);
+                }
+                break;
+            case self::TOTAL:
+                $return = $this->calculate(self::SUBTOTAL, $round + 1, false) + $this->calculate(self::VAT, $round + 1, false);
+                break;
+            default:
+                return false;
+        }
+        if ($format) {
+            return number_format($return, 2);
+        } else {
+            return round($return, 2);
+        }
+    }
+
+    /**
+     * Remove this offer from the database
+     * 
+     * If this doesn't succeed (i.e. false is returned), that means the offer was removed manually or by another instance of this class
+     * 
+     * @throws PDOException                 If something went wrong with the database
+     * 
+     * @return bool                         True on success, false on failure
+     */
+    public function delete() {
+        $stmt = $this->pdo->prepare("DELETE FROM `".constants::db_prefix."offer` WHERE `id`=?");
+        $stmt->execute(array($this->id));
+        if ($stmt->rowCount() != 1) {
+            return false;
+        } else {
+            return true;
+        }
+    }
+
+    /**
+     * Make a new assignment linked to this order
+     * 
+     * @param string $title                 The title for this assignment
+     * @param string $description           The description for this assignment
+     * @param int $hours                    The amount of hours to work on this assignment
+     * @param float $price_per_hour         The price per hour on this assignment
+     * @param float $vat                    The VAT percentage (so, 21 for 21%, not 0.21!)
+     * 
+     * @throws PDOException                 If something went wrong with the database
+     * @throws Exception                    If there was a problem with the input
+     * 
+     * @return assignment                   A new instance of the assignment class containing the new assignment
+     */
+    public function createAssignment($title, $description, $hours, $price_per_hour, $vat) {
+        $stmt = $this->pdo->prepare("INSERT INTO `".constants::db_prefix."assignment` (`offerId`,`title`,`description`,`hours`,`price_per_hour`,`VAT_percentage`) VALUES (?,?,?,?,?,?)");
+        $stmt->execute(array(
+            $this->id,
+            $title,
+            $description,
+            $hours,
+            $price_per_hour,
+            $vat
+        ));
+        if ($stmt->rowCount() == 1) {
+            return new assignment($this->pdo, $this->pdo->lastInsertId());
+        } else {
+            $error = $stmt->errorInfo();
+            throw new Exception($error[2]);
+        }
+    }
+
+    /**
+     * Generate a PDF invoice
+     * 
+     * @throws PDOException                 If something went wrong with the database 
+     * @throws Exception                    If the file could not be written or an other error occured
+     * 
+     * @return file                         An instance of the file class with information on the invoice file generated
+     */
+    public function generateInvoice() {
+        // Check if we already have a file
+        $file = $this->getInvoiceFile();
+        if (!($file instanceof file)) {
+            // If not, create a new file
+            $i = 1;
+            do {
+                $invoice_nr = date('Y',$this->invoice_date) . str_pad($i++, 2, '0', STR_PAD_LEFT);
+                $filename = 'invoice-' . $invoice_nr . '.pdf';
+            } while (file_exists(constants::files_folder . $filename));
+            $file = BusinessAdmin::createFile($this->pdo, $filename);
+
+            $this->setInvoiceFileId($file->getId());
+        } else {
+            $invoice_nr = str_replace(array('invoice-','.pdf'), array('',''), $file->getFilename());
+        }
+
+        $assignments = $this->getAssignments();
+        $list = array();
+        foreach ($assignments as $assignment)
+            $list[] = array(
+                $assignment->getTitle(), 
+                $assignment->getPricePerHour() * $assignment->getHours(), 
+                $assignment->getVAT() . "%", 
+                $assignment->getPricePerHour() * $assignment->getHours() * (1 + $assignment->getVAT() / 100)
+            );
+        
+        $pdf = new correspondence();
+        $pdf->SetContact($this->getContact());
+        $pdf->SetTitle($pdf->_('invoice') . ' ' . $invoice_nr);
+        $pdf->AddPage();
+        $pdf->correspondenceHeader();
+        
+        $pdf->SetY(100);
+        $pdf->SetFont('','B',14);
+        $pdf->SetTextColor(correspondence::HEAD_RED, correspondence::HEAD_GREEN, correspondence::HEAD_BLUE);
+        $pdf->Cell(60,6, $pdf->_('invoice'),'B');
+        $pdf->SetTextColor(0);
+        $pdf->Ln();
+
+        $width = array(90,25,20,25);
+        $subtotal = 0;
+        $btw = array();
+        $total = 0;
+        
+        // Header
+        
+        $pdf->SetFont('','',9);
+        $pdf->Cell(60,4);
+        $pdf->Ln();
+        $pdf->SetFont('','B');
+        $pdf->Cell(30,4.5,$pdf->_('invoice-date'));
+        $pdf->SetFont('','');
+        $pdf->Cell(50,4.5,date("d-m-Y", $this->invoice_date));
+        $pdf->Ln();
+        $pdf->SetFont('','B');
+        $pdf->Cell(30,4.5,$pdf->_('invoice-nr'));
+        $pdf->SetFont('','');
+        $pdf->Cell(50,4.5,$invoice_nr);
+        $pdf->Ln();
+        $pdf->SetFont('','B');
+        $pdf->Cell(30,4.5,$pdf->_('due-date'));
+        $pdf->SetFont('','');
+        $pdf->Cell(50,4.5,date("d-m-Y",$this->invoice_date+3600*24*30));
+        $pdf->Ln();
+        $pdf->Cell(60,4.5,'','B');
+        $pdf->Ln();
+        
+        $pdf->SetY(140);
+        
+        // Table
+    
+        $pdf->SetFont('','B',11);
+        $pdf->SetTextColor(correspondence::HEAD_RED, correspondence::HEAD_GREEN, correspondence::HEAD_BLUE);
+        $pdf->Cell($width[0],7,$pdf->_('description'),'B');
+        $pdf->Cell($width[1],7,$pdf->_('price-excl'),'B',0,'R');
+        $pdf->Cell($width[2],7,$pdf->_('vat'),'B',0,'R');
+        $pdf->Cell($width[3],7,$pdf->_('price-incl'),'B',0,'R');
+        $pdf->SetTextColor(0);
+        $pdf->Ln();
+        
+        $pdf->SetFont('','');
+        foreach ($list as $row) {
+            $x = $pdf->getX();
+            $y = $pdf->getY();
+            $pdf->MultiCell($width[0],6,$row[0],0,'L');
+            $newy = $pdf->getY();
+            $pdf->SetXY($x + $width[0], $y);
+            $pdf->Cell($width[1],6,constants::invoice_valuta.number_format($row[1],2),'',0,'R');
+            $pdf->Cell($width[2],6,round($row[2],0) . '%','',0,'R');
+            $pdf->Cell($width[3],6,constants::invoice_valuta.number_format($row[3],2),'',0,'R');
+            $pdf->Ln();
+            $pdf->SetY($newy);
+            $subtotal += $row[1];
+            if (!isset($btw[$row[2]])) $btw[$row[2]] = 0;
+            $btw[$row[2]] += $row[3] - $row[1];
+        }
+        $total = $subtotal;
+        foreach ($btw as $m) {
+            $total += $m;
+        }
+        
+        $pdf->Cell(array_sum($width),5,'','T');
+        $pdf->Ln();
+        $pdf->Cell(array_sum($width),5);
+        $pdf->Ln();
+        
+        $pdf->Cell($width[0],7);
+        $pdf->SetFont('','B');
+        $pdf->Cell($width[1] + $width[2],7,$pdf->_('amount'));
+        $pdf->SetFont('','');
+        $pdf->Cell($width[3],7,constants::invoice_valuta . $this->calculate(self::SUBTOTAL),'',0,'R');
+        $pdf->Ln();
+        
+        foreach ($btw as $p => $m) {
+            $pdf->Cell($width[0],7);
+            $pdf->Cell($width[1] + $width[2],7,$pdf->_('vat') . ' '.round($p,0).'%');
+            $pdf->Cell($width[3],7,constants::invoice_valuta . number_format($m,2),'',0,'R');
+            $pdf->Ln();
+        }
+        
+        $pdf->Cell(array_sum($width),5);
+        $pdf->Ln();
+        
+        $pdf->Cell($width[0],7);
+        $pdf->SetFont('','B');
+        $pdf->Cell($width[1] + $width[2],7,$pdf->_('total'));
+        $pdf->SetFont('','');
+        $pdf->Cell($width[3],7,constants::invoice_valuta . $this->calculate(self::TOTAL),'T',0,'R');
+        $pdf->Ln();
+        
+        // Footer
+
+        $pdf->Ln();
+        if ($pdf->GetY() < 230) {
+            $pdf->SetY(230);
+        }
+        $oldY = $pdf->GetY();
+        $pdf->Cell(45,20,'',1);
+        $pdf->Cell(12.5,20);
+        $pdf->Cell(45,20,'',1);
+        $pdf->Cell(12.5,20);
+        $pdf->Cell(45,20,'',1);
+        
+        $pdf->SetFont('','B',10);
+        $pdf->SetTextColor(correspondence::HEAD_RED, correspondence::HEAD_GREEN, correspondence::HEAD_BLUE);
+        $pdf->SetY($oldY + 3);
+        $pdf->Cell(5,5);
+        $pdf->Cell(40,5,$pdf->_('iban'));
+        $pdf->Cell(17.5,5);
+        $pdf->Cell(40,5,$pdf->_('invoice-nr'));
+        $pdf->Cell(17.5,5);
+        $pdf->Cell(40,5,$pdf->_('amount-due'));
+        $pdf->SetTextColor(0);
+        
+        $pdf->SetFont('','',8);
+        $pdf->Ln();
+        $pdf->Ln();
+        $oldY = $pdf->GetY();
+
+        $pdf->Cell(5,5);
+        $pdf->Cell(40,5, constants::invoice_iban);
+        $pdf->Cell(17.5,5);
+        $pdf->Cell(40,5,$invoice_nr);
+        $pdf->Cell(17.5,5);
+        $pdf->Cell(40,5,constants::invoice_valuta . $this->calculate(self::TOTAL));
+        
+        $pdf->SetY($oldY + 14);
+        
+        $pdf->SetFontSize(7);
+        $pdf->Cell(160,5,$pdf->_('request'),0,0,'C');
+        $pdf->Ln();
+        $pdf->Cell(160,5,str_replace('%%', constants::invoice_bic, $pdf->_('biccode')),0,0,'C');
+        
+        if (file_exists($file->getFilenamePath())) {
+            unlink($file->getFilenamePath());
+        }
+        $pdf->Output($file->getFilenamePath(),'F');
+        chmod($file->getFilenamePath(),0644);
+
+        return $file;
+    }
+}
diff --git a/docs/files/response.class.html b/docs/files/response.class.html
new file mode 100644
index 0000000..990a487
--- /dev/null
+++ b/docs/files/response.class.html
@@ -0,0 +1,280 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"/>
+    <meta charset="utf-8"/>
+    <title>API Documentation</title>
+    <meta name="author" content=""/>
+    <meta name="description" content=""/>
+
+    <link href="../css/bootstrap-combined.no-icons.min.css" rel="stylesheet">
+    <link href="../css/font-awesome.min.css" rel="stylesheet">
+    <link href="../css/prism.css" rel="stylesheet" media="all"/>
+    <link href="../css/template.css" rel="stylesheet" media="all"/>
+    
+    <!--[if lt IE 9]>
+    <script src="../js/html5.js"></script>
+    <![endif]-->
+    <script src="../js/jquery-1.11.0.min.js"></script>
+    <script src="../js/ui/1.10.4/jquery-ui.min.js"></script>
+    <script src="../js/bootstrap.min.js"></script>
+    <script src="../js/jquery.smooth-scroll.js"></script>
+    <script src="../js/prism.min.js"></script>
+    <!-- TODO: Add http://jscrollpane.kelvinluck.com/ to style the scrollbars for browsers not using webkit-->
+        <script type="text/javascript">
+        function loadExternalCodeSnippets() {
+            Array.prototype.slice.call(document.querySelectorAll('pre[data-src]')).forEach(function (pre) {
+                var src = pre.getAttribute('data-src');
+                var extension = (src.match(/\.(\w+)$/) || [, ''])[1];
+                var language = 'php';
+
+                var code = document.createElement('code');
+                code.className = 'language-' + language;
+
+                pre.textContent = '';
+
+                code.textContent = 'Loading…';
+
+                pre.appendChild(code);
+
+                var xhr = new XMLHttpRequest();
+
+                xhr.open('GET', src, true);
+
+                xhr.onreadystatechange = function () {
+                    if (xhr.readyState == 4) {
+
+                        if (xhr.status < 400 && xhr.responseText) {
+                            code.textContent = xhr.responseText;
+
+                            Prism.highlightElement(code);
+                        }
+                        else if (xhr.status >= 400) {
+                            code.textContent = '✖ Error ' + xhr.status + ' while fetching file: ' + xhr.statusText;
+                        }
+                        else {
+                            code.textContent = '✖ Error: File does not exist or is empty';
+                        }
+                    }
+                };
+
+                xhr.send(null);
+            });
+        }
+
+        $(document).ready(function(){
+            loadExternalCodeSnippets();
+        });
+        $('#source-view').on('shown', function () {
+            loadExternalCodeSnippets();
+        })
+    </script>
+
+    <link rel="shortcut icon" href="../images/favicon.ico"/>
+    <link rel="apple-touch-icon" href="../images/apple-touch-icon.png"/>
+    <link rel="apple-touch-icon" sizes="72x72" href="../images/apple-touch-icon-72x72.png"/>
+    <link rel="apple-touch-icon" sizes="114x114" href="../images/apple-touch-icon-114x114.png"/>
+</head>
+<body>
+
+<div class="navbar navbar-fixed-top">
+    <div class="navbar-inner">
+        <div class="container">
+            <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
+                <i class="icon-ellipsis-vertical"></i>
+            </a>
+            <a class="brand" href="../index.html">API Documentation</a>
+
+            <div class="nav-collapse">
+                <ul class="nav pull-right">
+                                        <li class="dropdown" id="charts-menu">
+                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
+                            Charts <b class="caret"></b>
+                        </a>
+                        <ul class="dropdown-menu">
+                            <li>
+                                <a href="../graphs/class.html">
+                                    <i class="icon-list-alt"></i>&#160;Class hierarchy diagram
+                                </a>
+                            </li>
+                        </ul>
+                    </li>
+                    <li class="dropdown" id="reports-menu">
+                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
+                            Reports <b class="caret"></b>
+                        </a>
+                        <ul class="dropdown-menu">
+                            <li>
+                                <a href="../reports/errors.html">
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        <i class="icon-list-alt"></i>&#160;Errors <span class="label label-info pull-right">50</span>
+                                </a>
+                            </li>
+                            <li>
+                                <a href="../reports/markers.html">
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        <i class="icon-list-alt"></i>&#160;Markers <span class="label label-info pull-right">1</span>
+                                </a>
+                            </li>
+                            <li>
+                                <a href="../reports/deprecated.html">
+                                                                                                            <i class="icon-list-alt"></i>&#160;Deprecated <span class="label label-info pull-right">0</span>
+                                </a>
+                            </li>
+                        </ul>
+                    </li>
+                </ul>
+            </div>
+        </div>
+    </div>
+    <!--<div class="go_to_top">-->
+    <!--<a href="#___" style="color: inherit">Back to top&#160;&#160;<i class="icon-upload icon-white"></i></a>-->
+    <!--</div>-->
+</div>
+
+<div id="___" class="container-fluid">
+        <section class="row-fluid">
+        <div class="span2 sidebar">
+                                <div class="accordion" style="margin-bottom: 0">
+        <div class="accordion-group">
+            <div class="accordion-heading">
+                                    <a class="accordion-toggle " data-toggle="collapse" data-target="#namespace-1973630602"></a>
+                                <a href="../namespaces/default.html" style="margin-left: 30px; padding-left: 0">\</a>
+            </div>
+            <div id="namespace-1973630602" class="accordion-body collapse in">
+                <div class="accordion-inner">
+
+                    
+                    <ul>
+                                                                                                    <li class="class"><a href="../classes/assignment.html">assignment</a></li>
+                                                    <li class="class"><a href="../classes/BusinessAdmin.html">BusinessAdmin</a></li>
+                                                    <li class="class"><a href="../classes/client.html">client</a></li>
+                                                    <li class="class"><a href="../classes/constants.html">constants</a></li>
+                                                    <li class="class"><a href="../classes/contact.html">contact</a></li>
+                                                    <li class="class"><a href="../classes/correspondence.html">correspondence</a></li>
+                                                    <li class="class"><a href="../classes/file.html">file</a></li>
+                                                    <li class="class"><a href="../classes/offer.html">offer</a></li>
+                                                    <li class="class"><a href="../classes/response.html">response</a></li>
+                                            </ul>
+                </div>
+            </div>
+        </div>
+    </div>
+
+        </div>
+    </section>
+    <section class="row-fluid">
+        <div class="span10 offset2">
+            <div class="row-fluid">
+                <div class="span8 content file">
+                    <nav>
+                                                                    </nav>
+
+                    <a href="#source-view" role="button" class="pull-right btn" data-toggle="modal"><i class="icon-code"></i></a>
+                    <h1><small></small>response.class.php</h1>
+                    <p><em>Provides the response class</em></p>
+                    
+
+                    
+                    
+                                        <h2>Classes</h2>
+                    <table class="table table-hover">
+                                            <tr>
+                            <td><a href="../classes/response.html">response</a></td>
+                            <td><em>Provides a standard to base all responses to be called with AJAX on</em></td>
+                        </tr>
+                                        </table>
+                                    </div>
+
+                <aside class="span4 detailsbar">
+                    <dl>
+                                                    <dt>Package</dt>
+                            <dd><div class="namespace-wrapper">\Default</div></dd>
+                        
+                        
+                    </dl>
+                    <h2>Tags</h2>
+                    <table class="table table-condensed">
+                                                    <tr>
+                                <th>
+                                    author
+                                </th>
+                                <td>
+                                                                            <p>Camil Staps</p>
+<p>BusinessAdmin: administrative software for small companies
+Copyright (C) 2015 Camil Staps (ViviSoft)</p>
+<p>This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.</p>
+<p>This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.</p>
+<p>You should have received a copy of the GNU General Public License
+along with this program.  If not, see <a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>.</p>
+                                                                    </td>
+                            </tr>
+                                            </table>
+
+                </aside>
+            </div>
+
+            
+            
+        </div>
+    </section>
+
+    <div id="source-view" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="source-view-label" aria-hidden="true">
+        <div class="modal-header">
+            <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
+            <h3 id="source-view-label"></h3>
+        </div>
+        <div class="modal-body">
+            <pre data-src="../files/response.class.php.txt" class="language-php line-numbers"></pre>
+        </div>
+    </div>
+
+    <footer class="row-fluid">
+        <section class="span10 offset2">
+            <section class="row-fluid">
+                <section class="span10 offset1">
+                    <section class="row-fluid footer-sections">
+                        <section class="span4">
+                                                        <h1><i class="icon-code"></i></h1>
+                            <div>
+                                <ul>
+                                                                    </ul>
+                            </div>
+                        </section>
+                        <section class="span4">
+                                                        <h1><i class="icon-bar-chart"></i></h1>
+                            <div>
+                                <ul>
+                                    <li><a href="../graphs/class.html">Class Hierarchy Diagram</a></li>
+                                </ul>
+                            </div>
+                        </section>
+                        <section class="span4">
+                                                        <h1><i class="icon-pushpin"></i></h1>
+                            <div>
+                                <ul>
+                                    <li><a href="../reports/errors.html">Errors</a></li>
+                                    <li><a href="../reports/markers.html">Markers</a></li>
+                                </ul>
+                            </div>
+                        </section>
+                    </section>
+                </section>
+            </section>
+            <section class="row-fluid">
+                <section class="span10 offset1">
+                    <hr />
+                    Documentation is powered by <a href="http://www.phpdoc.org/">phpDocumentor </a> and authored
+                    on February 7th, 2015 at 21:04.
+                </section>
+            </section>
+        </section>
+    </footer>
+</div>
+
+</body>
+</html>
diff --git a/docs/files/response.class.php.txt b/docs/files/response.class.php.txt
new file mode 100644
index 0000000..8d64006
--- /dev/null
+++ b/docs/files/response.class.php.txt
@@ -0,0 +1,112 @@
+<?php
+/**
+ * Provides the response class
+ * 
+ * @author Camil Staps
+ * 
+ * BusinessAdmin: administrative software for small companies
+ * Copyright (C) 2015 Camil Staps (ViviSoft)
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * Provides a standard to base all responses to be called with AJAX on
+ */
+class response {
+    /** The variable to keep the response in until output */
+    private $response;
+    /** The variable to keep the HTTP response code in until output */
+    private $http_response_code;
+
+    /**
+     * Create a new instance
+     */
+    public function __construct() {
+        $this->response = array();
+        $this->http_response_code = 200;
+    }
+
+    /**
+     * Set a variable of the response
+     * 
+     * @param string $name          The name of the variable to set
+     * @param string $value         The (new) value for the variable
+     */
+    public function __set($name, $value) {
+        $this->response[$name] = $value;
+    }
+
+    /**
+     * Get a variable of the response
+     * 
+     * @param string $name          The name of the variable to get
+     * 
+     * @return mixed                The value of the variable
+     */
+    public function __get($name) {
+        return $this->response[$name];
+    }
+
+    /**
+     * Check if a variable of the response is set
+     * 
+     * @param string $name          The name of the variable to check
+     *
+     * @return bool                 True if the variable exists, false otherwise
+     */
+    public function __isset($name) {
+        return isset($this->response[$name]);
+    }
+
+    /**
+     * Unset a variable of the response
+     * 
+     * @param string $name          The variable to unset
+     */
+    public function __unset($name) {
+        unset($this->response[$name]);
+    }
+
+    /**
+     * Get or set the HTTP response code
+     * 
+     * If a parameter is provided, it is used as the new HTTP response code, and a bool is returned for success or failure. Otherwise, the current one is returned.
+     * 
+     * @param int $code             The new code
+     * 
+     * @return int|bool             True on successful change, false on unsuccesful change, int when the current code is returned
+     */
+    public function http_response_code($code = null) {
+        if ($code === null) {
+            return $this->http_response_code;
+        } else {
+            if (http_response_code($code)) {
+                $this->http_response_code = $code;
+                return true;
+            } else {
+                return false;
+            }
+        }
+    }
+
+    /**
+     * Output the response in json
+     * 
+     * @return string               The response in json format
+     */
+    public function getJson() {
+        return json_encode($this->response);
+    }
+}
author	Camil Staps	2015-02-07 21:06:17 +0100
committer	Camil Staps	2015-02-07 21:06:17 +0100
commit	29955216d69ca08b69afe1ace71151839049c045 (patch)
tree	48a085e24cf1e65677bbace195017f118292ecc2 /docs/files
parent	Added some documentation; added Makefile for generating docs with phpdoc (diff)