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

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

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

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

(PHP 5, PHP 7) Gets default properties public

(PHP >= 5.4.0) Creates a new class instance without invoking the constructor.

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

(PHP 5, PHP 7) Gets static properties public

(PHP >= 5.4.0) Returns whether this is a trait

(PHP >= 5.4.0) Returns an array of trait aliases