44 lines
1.0 KiB
Markdown
44 lines
1.0 KiB
Markdown
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---
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title: Arrays
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localeTitle: 数组
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---
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## 数组
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### 数组类型
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在PHP中有三种类型的数组：索引数组，关联数组和多维数组。
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### 索引数组示例
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索引数组按索引号访问对象。
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```PHP
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<?php
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$freecodecamp = array("free", "code", "camp");
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```
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`$freecodecamp[0]`将返回`"free"` ， `$freecodecamp[1]`将返回`"code"` ， `$freecodecamp[2]`将返回`"camp"` 。
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### 关联数组示例
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关联数组按键名访问对象。
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```PHP
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<?php
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$freecodecamp = array("free"=>"0","code"=>"1","camp"=>"2");
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```
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`$freecodecamp['free']`将返回“0”， `$freecodecamp['code']`将返回“1”， `$freecodecamp['camp']`将返回“2”，
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### 多维数组示例
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多维数组是包含其他数组的数组。
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```PHP
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<?php
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$freecodecamp = array(array("free"=>"0","code"=>"1","camp"=>"2"),array("free"=>"0","code"=>"1","camp"=>"2"),array("free"=>"0","code"=>"1","camp"=>"2"));
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```
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#### 更多信息：
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* [php.net数组手册](https://secure.php.net/manual/en/language.types.array.php)
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