Phan is a static analyzer that looks for common issues and will verify type compatibility on various operations when type information is available or can be deduced. Phan does not make any serious attempt to understand flow control and narrow types based on conditionals.

Sick and tired of defending code quality over and over again? GrumPHP will do it for you! This composer plugin will register some git hooks in your package repository. When somebody commits changes, GrumPHP will run some tests on the committed code. If the tests fail, you won't be able to commit your changes. This handy tool will not only improve your codebase, it will also teach your co-workers to write better code following the best practices you've determined as a team.

GrumPHP has a set of common tasks built-in. You will be able to use GrumPHP with a minimum of configuration.

SonarQube is an open source platform for continuous inspection of code quality.

PhpMetrics provides various metrics about PHP projects. PhpMetrics is designed to be understable and easy to use. Thanks to d3js, it will scores your project with beautiful graphs. PhpMetrics interacts with Jenkins or Sonar. It provides reports in many formats (XML, violations, HTML, CSV...). PhpMetrics can be extended with plugins (Symfony2...).