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

(PHP 5, PHP 7) Attempt to load undefined class

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

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

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

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

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

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