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...
Mobile HTML5 compatibility : HTML5 compatibility on mobile and tablet browsers with testing on real devices
Fat-Free Framework : A powerful yet easy-to-use PHP micro-framework designed to help you build dynamic and robust Web applications - fast!
GetSimple CMS : GetSimple is an XML based, stand-a-alone, fully independant and lite Content Management System.
drupal.org : Drupal is an open source content management platform powering millions of websites and applications. It’s built, used, and supported by an active and ...
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).