47 lines
798 B
Markdown
47 lines
798 B
Markdown
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---
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title: If-else Statement
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localeTitle: If-else声明
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---
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## 介绍
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如果/ Else是条件陈述，其中取决于条件的真实性，将执行不同的动作。
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> **注意：**仅当条件具有多个操作语句时才需要`{}`括号。
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## 如果声明
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```
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if (condition){
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statement1;
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statement2;
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}
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```
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> **注意：** `else`语句是可选的。
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>
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> ## 如果/ Else声明
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```
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if (condition){
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statement1;
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statement2;
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}
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else{
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statement3;
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statement4;
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}
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```
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## 如果/ Elseif / Else声明
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```
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if (condition){
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statement1;
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statement2;
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}
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elseif{
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statement3;
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statement4;
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}
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else
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statement5;
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```
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有关更多信息，请查看以下链接： [PHP Else](http://php.net/manual/en/control-structures.elseif.php)
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