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

(PHP 5 >= 5.1.0, PHP 7) Checks if property is defined

(PHP 5, PHP 7) Exports a class public static

(PHP 5, PHP 7) Checks if class is abstract public

(PHP 5 >= 5.1.0, PHP 7) Checks if constant is defined

(PHP 5, PHP 7) Gets properties public array

(PHP 5, PHP 7) Checks if user defined public

(PHP 5, PHP 7) Checks class for instance public

(PHP 5 >= 5.1.0, PHP 7) Gets static property value

(PHP 5, PHP 7) Checks if class is final public