php 流程控制switch实例
switch允许对一个标量(表达式)的多个可能结果做选择。
语法:
switch (expr) { case result1: statement1 break; case result2: statement2 break; …… default: statement }
Copy after login
系统计算expr的值,根据计算结果(result1、result2等)来选择下面对应执行语句,如果所有的case结果都不符合,则会执行default里的语句。
例子:
<?php switch ($x) { case 0: echo "x 等于 0"; break; case 1: echo "x 等于 1"; break; case 2: echo "x 等于 2"; break; default: echo "x 既不等于1和2,也不等于0"; } ?>
Copy after login
运行
提示
- 可以有多个 case 条件判断
- case 后面结果也不是仅限于数字,也可以是字符或其他 PHP 支持的类型
- default 不是必须的
原文地址:http://www.manongjc.com/php/php_if_switch.html
相关阅读:
php getdate() 获取当前时间年月日时分秒星期
php date() 格式化日期时间
php date_sunset() 获取日落时间
php date_sunrise()根据地点(经度纬度)获取日出时间
php 全球合法时区列表大全
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article
Assassin's Creed Shadows: Seashell Riddle Solution
3 weeks ago
By DDD
What's New in Windows 11 KB5054979 & How to Fix Update Issues
2 weeks ago
By DDD
Where to find the Crane Control Keycard in Atomfall
3 weeks ago
By DDD
Assassin's Creed Shadows - How To Find The Blacksmith And Unlock Weapon And Armour Customisation
4 weeks ago
By DDD
Roblox: Dead Rails - How To Complete Every Challenge
3 weeks ago
By DDD

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics
CakePHP Tutorial
1386
52

