Simple captcha with PHP

Monday, October 10, 2011

Simple captcha with PHP, We seen how to create a Simple captcha . Now we look how to integrate that simple Captcha with HTML Form. Now I am going to show you a Newsletter Subscriber with our Simple Captcha.

Simple captcha with PHP and Live Example with Newsletter
  • Show an image Captcha without any dependancies, such as Class, Function etc.,
  • Customizable code length, character sets, and Unicode support
  • TTF font support
  • Easily  customization: Background and Foreground colors
Kindly view  How to Create a Simple Captcha in PHP before the Newsletter Integration of this Capcha

Let me create a HTML form look like this
 

<?php
session_start();

if(isset($_POST['subscribe']))
{
 $email=$_POST['email'];
 if(!preg_match('/([\w-\.]+)@((?:[\w]+\.)+)([a-zA-Z]{2,4})/',$email))
 {
  $response="Invalid Email Address";
 }elseif(strcmp($_SESSION['capcha_code'],$_POST['code'])!=0)
 {
  $response="Invalid Verfification Code";
 }else
 {
  //Save Email address
  $response="Subscribed! Thank you !";
 }
 
}
?>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>Simple Capcha : Example Form</title>
<style type="text/css">
<!--
body,td,th {
 font-family: Verdana, Geneva, sans-serif;
 font-size: 11px;
 color: #333;
}
body {
 margin-left: 10px;
 margin-top: 10px;
}
-->
</style></head>

<body>
<form action="" method="post" name="subscribe">

<table border="0" cellspacing="0" cellpadding="5" style="border:1px solid #CCC;">
  <tr>
    <td colspan="2" bgcolor="#D6D6D6"><b>Subscribe Newsletter</b></td>

    </tr>
  <tr>
    <td>Email Address</td>
    <td><input name="email" type="text" id="email"></td>

  </tr>
  <tr>
    <td>Antibot</td>
    <td><input type="text" name="code" id="code" value="Enter code here" onFocus="this.value=''"></td>

  </tr>
  <tr>
    <td>&nbsp;</td>
    <td>
    
    <img src="capcha_image.php" alt="Verify" width="75" height="25" style="border:2px solid #000;"></td>

  </tr>
  <tr>
    <td>&nbsp;</td>
    <td><input name="subscribe" type="submit" id="subscribe" value="Subscribe"></td>

  </tr>
  <tr>
    <td colspan="2">
    <?php echo @$response; ?>
    </td>
    </tr>

</table>
</form>
</body>
</html> 


Download This Script       View Demo Download Script




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