Shifts a node from the beginning of the doubly linked list

SplDoublyLinkedList::shift

(PHP 5 >= 5.3.0)

SplDoublyLinkedList::shift — Shifts a node from the beginning of the doubly linked list

mixed SplDoublyLinkedList::shift ( void )

This function has no parameters.

The value of the shifted node.

Throws RuntimeException when the data-structure is empty.