Ensuring an application source code quality is not an easy task. This is especially true with the PHP language, which is still compared to a non-professional programming language nowadays. In fact, the PHP language has plenty of professional tools for monitoring the quality of PHP projects. These tools are also standard enough to be coupled and to communicate with other professional tools in Java for example. In this session, we will introduce some of the best practices to adopt to write clean and maintainable code. Then, we will look at the best PHP quality tools to setup and monitor a PHP project on a day-to-day development. The conference will especially focus on the following topics: unit and functional testing, continuous integration platform (Jenkins) and quality metrics (Sonar Source).