Contribute to PHP - Write PHP Tests
- PHP is built by the community and you can help too. Even if you're not into hardcore C programming and don't have time to contribute to the core PHP development, you can help in contributing your time in writing tests for PHP.
Writing tests for PHP is quite easy and uses a framework called PHPT to test the PHP functionality. If you are interested in how to go about writing tests for PHP, check out this nice article by Rafel Dohms, which takes you step by step on this path -