Phan : Phan is a static analyzer that looks for common issues and will verify type compatibility on various operations when type information is available or ...
Psalm : Psalm is a static analysis tool for finding errors in PHP applications.
The PHP Coding Standards Fixer : The PHP Coding Standards Fixer tool fixes most issues in your code when you want to follow the PHP coding standards as defined in the PSR-1 and PSR-2 ...