I'm sure most out there have heard about this, but I wanted to post it anyway to get even more of the community involved. The link, posted over on Slashdot talk about a research project the folks over at Uberhacker.com are putting underway.

PHP and SQL Security are being proven more weak every day. Uberhacker.Com is running a PHP and SQL security research project to raise awareness of secure scripting. The site hosts guides to secure PHP programming, forums, and scripting challenges to see who can create the most secure scripts.

This site seems to be a decent resource for information, and the "research project" to test the weakness of PHP scripts (and the limits of code hackers to push the limits/loopholes).