(PHP 5 >= 5.3.0, PHP 7) Returns the value at the specified index

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

(PHP 5 >= 5.3.0, PHP 7) Unsets the value at the specified $index

(PHP 5 >= 5.3.0, PHP 7) Return current array index

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

(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) Returns whether the requested $index exists

(PHP 5 >= 5.1.0, PHP 7) Sets flags for the SplFileObject

(PHP 5 >= 5.1.0, PHP 7) Get children public