hn273

HN CAPTCHA is a PHP class that generates a picture to use in forms that perform CAPTCHA tests (Completely Automated Public Turing to tell Computers from Humans Apart). After the test form is submitted, a key entered by the user in a text field is compared to determine whether it matches the text in the picture. It is a fork of ocr_captcha that features support for older versions of the GD library, hacking prevention, optional use of Web safe colors, support for the use of multiple random TrueType fonts, and more.

HN URL Rewrite can emulate page request URL rewriting and redirection. It can parse and change the output of the current page script to rewrite the URLs of links or images in the page with absolute URLs, relative URIs, and URLs that contain the scheme and host (http://www.somehost.com).