35 lines
1.0 KiB
Markdown
35 lines
1.0 KiB
Markdown
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---
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title: Switch
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localeTitle: 开关
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---
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## 开关
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在PHP中， `Switch`语句与Javascript `Switch`语句非常相似（请参阅[Javascript Switch指南](/javascript/switch-statements)进行比较和对比）。它允许在很多不同的条件下进行快速案例测试，代码也更具可读性。
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### 句法
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```php
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<?php
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// Switch Statement Example
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switch ($i) {
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case "free":
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echo "i is free";
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break;
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case "code":
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echo "i is code";
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break;
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case "camp":
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echo "i is camp";
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break;
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default:
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echo "i is freecodecamp";
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}
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```
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### 打破
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`break;`语句退出交换机并继续运行应用程序代码的其余部分。如果你不使用`break;`声明你最终可能会运行多个案例和陈述，有时可能需要这种情况，在这种情况下你不应该包括`break;`声明。
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#### 更多信息：
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* [php.net docs Switch](https://secure.php.net/manual/en/control-structures.switch.php)
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