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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                數組,就是將多個“數據”放在一起,排成一個有序序列,這個序列作為一個整體(里面包括了多個數據),就稱為“數組”。比如: ``` $info1 = array(‘張三豐’, 18, “男” ); //新版本中,還可以這樣寫: [‘張三豐’, 18, “男” ] ``` 或: ``` $info2 = array(‘name’ => ‘張三豐’, ‘age’=>18, ‘gender’ => “男” ); //新版本中,還可以這樣寫: [‘name’ => ‘張三豐’, ‘age’=>18, ‘gender’ => “男” ] ``` 數組的賦值: ``` $數組變量[下標] = 一個值; ``` 數組的取值: ``` 形式為:$數組變量[下標] 比如: echo $info1[0]; print_r( $info2[‘name’] ); ``` 數組的每一項,都是由“下標”和對應的“值”構成,其內部結構,如下所示: $info1內部結構: ![](https://img.kancloud.cn/2c/aa/2caa5c052ac10d45a25902c7348bab86_868x66.png) 這種下標,通常稱為“數字下標”。 $info2內部結構: ![](https://img.kancloud.cn/29/f5/29f54ab729a2a714956acab5d0335898_867x64.png) 這種下標,通常被稱為“字符串下標”。 ![](https://img.kancloud.cn/e0/26/e02671f49f062c00bddb0ecfbf5ddfc5_756x513.png)
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