(PHP 5 >= 5.1.2, PHP 7) Tells if the file is a directory

(PHP 5 >= 5.3.0, PHP 7) Check whether the doubly linked list contains more nodes

(PHP 5 >= 5.1.0, PHP 7) Exchange the array for another one.

(PHP 5 >= 5.1.0, PHP 7) Set maximum line length

(PHP 5 >= 5.1.0, PHP 7) Get flags public void

(PHP 5 >= 5.3.0, PHP 7) Adds an element to the queue.

(PHP 5 >= 5.3.6, PHP 7) Removes all objects except for those contained in another storage from the current

(PHP 5 >= 5.3.0, PHP 7) Checks whether the doubly linked list is empty.

(PHP 5 >= 5.4.0, PHP 7) Check whether the inner iterator's current element has children

(PHP 5, PHP 7) Check whether current DirectoryIterator position is a valid file