CAPTCHA validation using PHP and Ajax
CAPTCHA has become a popular means of securing forms against automated submission, by requiring users to enter a string displayed in an automatically generated image. This implementation uses Ajax to conveniently combine CAPTCHA into normal pre-submission form verification. You'll need PHP to be installed with the GD image library (most PHP implementations will have this as standard).
Date: Dec, 20 2006
Author: The Mouse Whisperer, http://www.crackajax.net/captchaform.php
Number of Ratings: 180 VotesVisitor Voting Booth: