(PHP 5 >= 5.1.0, PHP 7) Set behaviour flags

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

(PHP 5 >= 5.0.0, PHP 7) Check whether array contains more entries

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

(PHP 5 >= 5.0.0, PHP 7) Get array copy public

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

(PHP 5 >= 5.3.0, PHP 7) Attaches iterator information

(PHP 5, PHP 7) Get file name as a string public

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

(PHP 5 >= 5.1.0, PHP 7) Create an iterator from anything that is traversable