略微加速

PHP官方手册 - 互联网笔记

PHP - Manual: SplDoublyLinkedList::unshift

2024-11-22

SplDoublyLinkedList::unshift

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

SplDoublyLinkedList::unshiftPrepends 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。

add a noteadd a note

User Contributed Notes 1 note

up
0
lincoln dot du dot j at gmail dot com
4 years ago
$dll = new SplDoublyLinkedList();
$dll->push(2);
$dll->push(3);
$dll->unshift(5); // add 5 beginning of the array
$dll->rewind();

while($dll->valid()){
    echo $dll->current()."\n";
    $dll->next();
}

Output

5
2
3

官方地址:https://www.php.net/manual/en/spldoublylinkedlist.unshift.php

北京半月雨文化科技有限公司.版权所有 京ICP备12026184号-3