(PHP 4, PHP 5, PHP 7) Retrieves the parent class name for object or class

(PHP 5 >= 5.4.0, PHP 7) Returns an array of all declared traits

(PHP 5 >= 5.3.0, PHP 7) Creates an alias for a class

(PHP 4, PHP 5, PHP 7) Returns the name of the class of an object

(PHP 5 >= 5.0.2, PHP 7) Checks if the interface has been defined

(PHP 4, PHP 5, PHP 7) Checks if the object has this class as one of its parents or implements it.

(PHP 5, PHP 7) Returns an array of all declared interfaces

(PHP 4, PHP 5, PHP 7) Gets the properties of the given object

(PHP 5 >= 5.1.0, PHP 7) Checks if the object or class has a property

(PHP 4, PHP 5, PHP 7) Checks if the class method exists