(PHP 5, PHP 7) Checks if deprecated public bool

(PHP 5 >= 5.0.3, PHP 7) Gets number of parameters

(PHP 5, PHP 7) Clones function final private

(PHP 5 >= 5.1.0, PHP 7) Gets doc comment public

(PHP 5 >= 5.3.0, PHP 7) Gets namespace name

(PHP 5, PHP 7) Gets parameters public array

(PHP 7) Checks if the function has a specified return type