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...
TCPDF : TCPDF is a FLOSS PHP class for generating PDF documents.
Phan : Phan is a static analyzer that looks for common issues and will verify type compatibility on various operations when type information is available or ...
CSSdoc : This is a draft to bring automatic documentation to CSS files, like its known for JavaScript and PHP files through JavaDoc/DocTags.
Silex : The PHP micro-framework based on Symfony2 Components
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).