(PHP 5 >= 5.1.0, PHP 7) Invokes function args

(PHP 5, PHP 7) Invokes function public mixed

(PHP 5, PHP 7) Checks if function is disabled

(PHP 5, PHP 7) Exports function public static

(PHP 5, PHP 7) Constructs a ReflectionFunction object

(PHP >= 5.4.0) Returns a dynamically created closure for the function

(PHP 5, PHP 7) To string public string Refle