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

(PHP 5, PHP 7) Invokes function public mixed

(PHP 5, PHP 7) Exports function public static

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

(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