Simple and powerful captcha in PHP
example_form.php <?php require_once('RainCaptcha.class.php'); $captcha = new RainCaptcha(); ?> <html> <body> <form action="example_handler.php" method="post"> <table> <tr> <th>Captcha</th> <td><img src="<?php echo $captcha->getImage(); ?>" /> <br /> <input name="captcha" type="text" maxlength="5" /></td> </tr> <tr> <td></td> <td><input type="submit" value="Submit" /></td> </tr> </table> </form> </body> </html> example_handler.php <html> <body> <?php ...