Simple PHP Catcha

Usage

In the html: Simply include the captcha directory (or index.php page) in an image tag and create a text/number input box.

	<img src="/captcha/" class="noframe" alt="" id="captchaImage" />
	<input type="text" placeholder="Answer" name="captcha" size="2" id="captchaInput"/>

In the server script (PHP): Check the incoming request value (in this examples case 'captcha') against the stored sessions value. Remember to include session_start() at the top of the php file.

	if($_REQUEST['captcha'] != $_SESSION['captcha'])
		// send error
	else
		// process request