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...
DaDaBIK : DataBase Interfaces Kreator - Create a PHP Web front-end for a MySQL PostgreSQL Oracle MS SQL Server database in a minute
Snyk : Snyk helps you use open source and stay secure.
Continuously find & fix vulnerabilities in your dependencies.
Pro Git : The entire Pro Git book, written by Scott Chacon and published by Apress, is available here
Fun Retrospectives : Activities and ideas for making agile retrospectives more engaging
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).