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...
Pro Git : The entire Pro Git book, written by Scott Chacon and published by Apress, is available here
DVWA - Damn Vulnerable Web Application : Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is damn vulnerable. Its main goals are to be an aid for security professionals to t...
asdf : Extendable version manager with support for Ruby, Node.js, Elixir, Erlang & more
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).