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

(PHP 4 >= 4.0.5, PHP 5) Call a user method given with an array of parameters

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

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

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

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

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

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

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

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