PHP Security Checker
We did a post on ten security checks for PHP, and pointed to a PHP security guide as well. On a more recent, related note, you might want to take a look at Rkrishardy.com regarding researchers from MIT, Stanford and Syracuse having developed “Ardilla”, which analyzes PHP code for XSS (Cross-Site Scripting) and SQL injection attack vulnerabilities.
Derived from a modified version of the Zend Interpreter, from work done at IBM, Ardilla can’t be released as open source because of licensing issues.



Thanks for the info, I am studying PHP at the moment.