PHP CAPTCHA Script
Get the open-source PHP CAPTCHA script “Secureimage” at . Generate complex images and CAPTCHA codes with a script that can be easily added into existing forms on your website to provide protection from spam bots. All you need to run it is PHP and GD support within PHP. The Securimage script generates the CAPTCHA images and validates the typed code. Audible codes can be streamed to the browser with Flash for the vision impaired. It requires no configuration after downloading. PHP 4 and PHP 5 versions available for download.
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