SQL Injection Cheat Sheet : Samples are provided to allow reader to get basic idea of a potential SQL Injection attack and almost every section includes a brief information about...
Zephir Language : Zephir, an open source, high-level/domain specific language designed to ease the creation and maintainability of extensions for PHP with a focus on ty...
MaintainableCSS : Write CSS without worrying that overzealous, pre-existing styles will cause problems. MaintainableCSS is an approach to writing modular, scalable and ...
churn-php : churn-php is a package that helps you identify php files in your project that could be good candidates for refactoring.
Keep a Changelog : Don’t let your friends dump git logs into changelogs.
This is a collection of known design patterns and some sample code how to implement them in PHP. Every pattern has a small list of examples (most of them from Zend Framework, Symfony2 or Doctrine2 as I'm most familiar with this software).