Automatic PHP Security tool

Hi people, I would like to know if there´s some App that run automatic test against a PHP Application to detect security issues, potential bugs and so on. I know this kind of applications exists for other fields of IT, but I don´t know if there are some application or tests to run against a PHP App. Might be some security suite or tests written in Python or Perl, I don´t know, but I guess you might know. In this case, I just finished the development of an application developed in PHP with XHTML and that works with Sqlite. And I would like to include some security tests before it goes online. It´s not actually working in production environment, but it´s ready to use it. Thanks a lot.