(PHP 5 >= 5.3.0, PHP 7) Constructs a new queue implemented using a doubly linked list

(PHP 5 >= 5.3.0, PHP 7) Returns the data associated with the current iterator entry

(PHP 5, PHP 7) Return available SPL classes array

(PHP 5 >= 5.0.0, PHP 7) Return current array entry

(PHP 5 >= 5.3.0, PHP 7) Get children public

Examples: The Built in Exception class A User defined Exception class can be

(PHP 5 >= 5.1.0, PHP 7) Gets the iterator classname for the ArrayObject.

(PHP 5 >= 5.3.0, PHP 7) Retrieve the key for the current file

(PHP 5 >= 5.3.0, PHP 7) Constructs a new fixed array

(PHP 5 >= 5.1.2, PHP 7) Unregister given function as __autoload() implementation