SplDoublyLinkedList::unshift

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

SplDoublyLinkedList::unshift — Prepends the doubly linked list with an element

说明

public SplDoublyLinkedList::unshift ( mixed $value ) : void

Prepends value at the beginning of the doubly linked list.

参数

value

The value to unshift.

返回值

没有返回值。