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example_form.ajax.php
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1 <?php
2 session_start(); // this MUST be called prior to any output including whitespaces and line breaks!
3 
4 $GLOBALS['ct_recipient'] = 'YOU@EXAMPLE.COM'; // Change to your email address!
5 $GLOBALS['ct_msg_subject'] = 'Securimage Test Contact Form';
6 
7 $GLOBALS['DEBUG_MODE'] = 1;
8 // CHANGE TO 0 TO TURN OFF DEBUG MODE
9 // IN DEBUG MODE, ONLY THE CAPTCHA CODE IS VALIDATED, AND NO EMAIL IS SENT
10 
11 
12 // Process the form, if it was submitted
13 process_si_contact_form();
14 
15 ?>
16 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
17 <html xmlns="http://www.w3.org/1999/xhtml">
18 <head>
19  <meta http-equiv="Content-type" content="text/html;charset=UTF-8" />
20  <title>Securimage Example Form</title>
21  <style type="text/css">
22  <!--
23  #success_message { border: 1px solid #000; width: 550px; text-align: left; padding: 10px 7px; background: #33ff33; color: #000; font-weight; bold; font-size: 1.2em; border-radius: 4px; -moz-border-radius: 4px; -webkit-border-radius: 4px; }
24  fieldset { width: 90%; }
25  legend { font-size: 24px; }
26  .note { font-size: 18px; }
27  -->
28  </style>
29  </head>
30 <body>
31 
32 <fieldset>
33 <legend>Example Form</legend>
34 
35 <p class="note">
36  This is an example PHP form that processes user information, checks for errors, and validates the captcha code.<br />
37  This example form also demonstrates how to submit a form to itself to display error messages.
38 </p>
39 
40 <div id="success_message" style="display: none">Your message has been sent!<br />We will contact you as soon as possible.</div>
41 
42 <form method="post" action="" id="contact_form" onsubmit="return processForm()">
43  <input type="hidden" name="do" value="contact" />
44 
45  <p>
46  <strong>Name*:</strong><br />
47  <input type="text" name="ct_name" size="35" value="" />
48  </p>
49 
50  <p>
51  <strong>Email*:</strong><br />
52  <input type="text" name="ct_email" size="35" value="" />
53  </p>
54 
55  <p>
56  <strong>URL:</strong><br />
57  <input type="text" name="ct_URL" size="35" value="" />
58  </p>
59 
60  <p>
61  <strong>Message*:</strong><br />
62  <textarea name="ct_message" rows="12" cols="60"></textarea>
63  </p>
64 
65  <p>
66  <img id="siimage" style="border: 1px solid #000; margin-right: 15px" src="./securimage_show.php?sid=<?php echo md5(uniqid()) ?>" alt="CAPTCHA Image" align="left" />
67  <object type="application/x-shockwave-flash" data="./securimage_play.swf?bgcol=#ffffff&amp;icon_file=./images/audio_icon.png&amp;audio_file=./securimage_play.php" height="32" width="32">
68  <param name="movie" value="./securimage_play.swf?bgcol=#ffffff&amp;icon_file=./images/audio_icon.png&amp;audio_file=./securimage_play.php" />
69  </object>
70  &nbsp;
71  <a tabindex="-1" style="border-style: none;" href="#" title="Refresh Image" onclick="document.getElementById('siimage').src = './securimage_show.php?sid=' + Math.random(); this.blur(); return false"><img src="./images/refresh.png" alt="Reload Image" height="32" width="32" onclick="this.blur()" align="bottom" border="0" /></a><br />
72  <strong>Enter Code*:</strong><br />
73  <input type="text" name="ct_captcha" size="12" maxlength="8" />
74  </p>
75 
76  <p>
77  <br />
78  <input type="submit" value="Submit Message" />
79  </p>
80 
81 </form>
82 </fieldset>
83 
84 <script src="http://code.jquery.com/jquery-1.10.1.min.js"></script>
85 <script type="text/javascript">
86  $.noConflict();
87 
88  function reloadCaptcha()
89  {
90  jQuery('#siimage').src = './securimage_show.php?sid=' + Math.random();
91  }
92 
93  function processForm()
94  {
95  jQuery.ajax({
96  url: '<?php echo $_SERVER['PHP_SELF'] ?>',
97  type: 'POST',
98  data: jQuery('#contact_form').serialize(),
99  dataType: 'json',
100  }).done(function(data) {
101  if (data.error === 0) {
102  jQuery('#success_message').show();
103  jQuery('#contact_form')[0].reset();
104  reloadCaptcha();
105  setTimeout("jQuery('#success_message').fadeOut()", 30000);
106  } else {
107  alert("There was an error with your submission.\n\n" + data.message);
108  }
109  });
110 
111  return false;
112  }
113 </script>
114 
115 </body>
116 </html>
117 
118 <?php
119 
120 // The form processor PHP code
121 function process_si_contact_form()
122 {
123  if ($_SERVER['REQUEST_METHOD'] == 'POST' && @$_POST['do'] == 'contact') {
124  // if the form has been submitted
125 
126  foreach($_POST as $key => $value) {
127  if (!is_array($key)) {
128  // sanitize the input data
129  if ($key != 'ct_message') $value = strip_tags($value);
130  $_POST[$key] = htmlspecialchars(stripslashes(trim($value)));
131  }
132  }
133 
134  $name = @$_POST['ct_name']; // name from the form
135  $email = @$_POST['ct_email']; // email from the form
136  $URL = @$_POST['ct_URL']; // url from the form
137  $message = @$_POST['ct_message']; // the message from the form
138  $captcha = @$_POST['ct_captcha']; // the user's entry for the captcha code
139  $name = substr($name, 0, 64); // limit name to 64 characters
140 
141  $errors = array(); // initialize empty error array
142 
143  if (isset($GLOBALS['DEBUG_MODE']) && $GLOBALS['DEBUG_MODE'] == false) {
144  // only check for errors if the form is not in debug mode
145 
146  if (strlen($name) < 3) {
147  // name too short, add error
148  $errors['name_error'] = 'Your name is required';
149  }
150 
151  if (strlen($email) == 0) {
152  // no email address given
153  $errors['email_error'] = 'Email address is required';
154  } else if ( !preg_match('/^(?:[\w\d]+\.?)+@(?:(?:[\w\d]\-?)+\.)+\w{2,4}$/i', $email)) {
155  // invalid email format
156  $errors['email_error'] = 'Email address entered is invalid';
157  }
158 
159  if (strlen($message) < 20) {
160  // message length too short
161  $errors['message_error'] = 'Please enter a message';
162  }
163  }
164 
165  // Only try to validate the captcha if the form has no errors
166  // This is especially important for ajax calls
167  if (sizeof($errors) == 0) {
168  require_once dirname(__FILE__) . '/securimage.php';
169  $securimage = new Securimage();
170 
171  if ($securimage->check($captcha) == false) {
172  $errors['captcha_error'] = 'Incorrect security code entered';
173  }
174  }
175 
176  if (sizeof($errors) == 0) {
177  // no errors, send the form
178  $time = date('r');
179  $message = "A message was submitted from the contact form. The following information was provided.<br /><br />"
180  . "Name: $name<br />"
181  . "Email: $email<br />"
182  . "URL: $URL<br />"
183  . "Message:<br />"
184  . "<pre>$message</pre>"
185  . "<br /><br />IP Address: {$_SERVER['REMOTE_ADDR']}<br />"
186  . "Time: $time<br />"
187  . "Browser: {$_SERVER['HTTP_USER_AGENT']}<br />";
188 
189  if (isset($GLOBALS['DEBUG_MODE']) && $GLOBALS['DEBUG_MODE'] == false) {
190  // send the message with mail()
191  mail($GLOBALS['ct_recipient'], $GLOBALS['ct_msg_subject'], $message, "From: {$GLOBALS['ct_recipient']}\r\nReply-To: {$email}\r\nContent-type: text/html; charset=ISO-8859-1\r\nMIME-Version: 1.0");
192  }
193 
194  $return = array('error' => 0, 'message' => 'OK');
195  die(json_encode($return));
196  } else {
197  $errmsg = '';
198  foreach($errors as $key => $error) {
199  // set up error messages to display with each field
200  $errmsg .= " - {$error}\n";
201  }
202 
203  $return = array('error' => 1, 'message' => $errmsg);
204  die(json_encode($return));
205  }
206  } // POST
207 } // function process_si_contact_form()
process_si_contact_form
process_si_contact_form()
Definition: example_form.ajax.php:121
$_POST
$_POST['username']
Definition: cron.php:12
processForm
processForm()
Definition: example_form.ajax.php:93
Securimage
Project: Securimage: A PHP class for creating and managing form CAPTCHA images File: securimage...
$errors
$errors
Definition: imagemanager.php:73
reloadCaptcha
< a tabindex="-1" style="border-style: none;" href="#" title="Refresh Image" onclick="document.getElementById('siimage').src = './securimage_show.php?sid=' + Math.random(); this.blur(); return false">< img src="./images/refresh.png" alt="Reload Image" height="32" width="32" onclick="this.blur()" align="bottom" border="0"/></a >< br/>< strong > Enter Code * reloadCaptcha()
Definition: example_form.ajax.php:88
$GLOBALS
$GLOBALS['ct_recipient']
Definition: example_form.ajax.php:4
PHP
SMTP MX.