Static Analysis github.com/phan/phan Install with composer Create .phan/config.php '7.2', 'directory_list' => [ 'src/' ], "exclude_analysis_directory_list" => [ 'vendor/' ], ]; ]]> Checks enhanced phpdoc type annotations Everything is defined and accessible Type safety PHP version compatibility No-ops Unreachable code Unused use statements Redefinitions Signature compatibility and final on inheritance and many more Enhanced PHPDoc type annotations "test", 'max'=>10]); C::fn(1, [1,2,3], ['mode'=>"test", 'max'=>10]); C::fn("test", [1,2,3], ['max'=>10,'mode'=>"test"]); C::fn([1], [1,2,3], ['mode'=>"test", 'max'=>10]); // PhanTypeMismatchArgument Argument 1 (union) is array{0:1} // but \C::fn() takes int|string C::fn("test", [1,2,3], ['max'=>10]); // PhanTypeMismatchArgument Argument 3 (shaped) is array{max:10} // but \C::fn() takes array{mode:string,max:int} ]]> User plugins Writing Plugins for Phan Included sample plugins Demo Plugin Preg Regex Checker Printf Checker Unreachable Code DollarDollar NonBool Branch Numerical Comparison Has PHPDoc Duplicate Expression Daemon mode vim integration