30 lines
552 B
Markdown
30 lines
552 B
Markdown
|
---
|
|||
|
|
title: Switch Statements
|
|||
|
|
localeTitle: 切换语句
|
|||
|
|
---
|
|||
|
|
## 切换语句
|
|||
|
|
|
|||
|
|
Switch语句根据条件的值执行代码块。
|
|||
|
|
|
|||
|
|
### 句法：
|
|||
|
|
|
|||
|
|
```PHP
|
|||
|
|
switch(x) {
|
|||
|
|
case 1:
|
|||
|
|
statement1;
|
|||
|
|
break;
|
|||
|
|
case 2:
|
|||
|
|
statement2;
|
|||
|
|
break;
|
|||
|
|
default:
|
|||
|
|
defaultstatement;
|
|||
|
|
}
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
在上面的例子中，x是条件。将执行匹配案例之后的陈述。如果没有匹配项，则将运行默认语句。
|
|||
|
|
|
|||
|
|
`break`关键字用于结束每个案例。
|
|||
|
|
|
|||
|
|
### 更多信息：
|
|||
|
|
|
|||
|
|
[PHP开关](http://php.net/manual/en/control-structures.switch.php)
|