Over on Brainbench.com, there's a new free certification they're offering for those out there looking to flex their PHP5 skills.

Our PHP 5 test measures your knowledge of scripting in PHP Hypertext Preprocessor 5. Designed for experienced programmers, this test covers the following topics: Communication Functions, Databases, General Functions, HTML, Language Functions, Language Structure, Object Oriented PHP.

The test covers topics such as the communications functions, language functions, object oriented concepts, database programming, and the language structure. You can take the test here.