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

(PHP 5, PHP 7) Exports public static string

(PHP 5, PHP 7) Checks if the class is an interface

(PHP 5, PHP 7) Gets defined constant public mixed

(PHP 5, PHP 7) Gets extension info public ReflectionExtension

(PHP 7) Gets the specified return type of a function

(PHP 5, PHP 7) Print extension info public void

(PHP 5, PHP 7) Invokes function public mixed

(PHP 5, PHP 7) Checks if class is defined internally by an extension, or the core

(PHP 5, PHP 7) Gets the filename of the file in which the class has been defined