(PHP 5 >= 5.1.2, PHP 7) Return all registered __autoload() functions

(PHP 5 >= 5.0.0, PHP 7) Construct a new array object

(PHP 5 >= 5.1.0, PHP 7) Return the interfaces which are implemented by the given class or interface

(PHP 5 >= 5.1.2, PHP 7) Tells if the object references a regular file

(PHP 5, PHP 7) Returns the inner iterator public

(PHP 5 >= 5.3.0, PHP 7) Checks whether the queue is empty.

(PHP 5 >= 5.2.0, PHP 7) Sort array by values

(PHP 5 >= 5.1.0, PHP 7) Get the inner iterator

(PHP 5 >= 5.3.0, PHP 7) Move to the next node

(PHP 5 >= 5.1.2, PHP 7) Gets file permissions