Phinx : Phinx makes it ridiculously easy to manage the database migrations for your PHP app. In less than 5 minutes you can install Phinx and create your firs...
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 ...
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 ...
ApiGen : ApiGen is the tool for creating professional API documentation from PHP source code, similar to discontinued phpDocumentor/phpDoc.
churn-php is a package that helps you identify php files in your project that could be good candidates for refactoring.