(PHP 5 >= 5.1.2, PHP 7) Register and return default file extensions for spl_autoload

(PHP 5 >= 5.0.0, PHP 7) Move to next entry

(PHP 5 >= 5.3.0, PHP 7) Sets flags public

(PHP 5 >= 5.1.0, PHP 7) Constructs a ParentIterator

(PHP 5 >= 5.2.0, PHP 7) The offsetUnset purpose

(PHP 5 >= 5.3.0, PHP 7) Counts the number of elements in the doubly linked list.

(PHP 5 >= 5.3.0, PHP 7) Check whether the array contains more elements

(PHP 5 >= 5.3.0, PHP 7) Construct a RecursiveTreeIterator

(PHP 5 >= 5.1.0, PHP 7) Returns the number of objects in the storage

(PHP 5 >= 5.1.0, PHP 7) The rewind() method