(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 >= 5.4.0) Returns whether this is a trait

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

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

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

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

(PHP 5, PHP 7) Gets static properties public

(PHP 5, PHP 7) Gets default properties public

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