PHP多维数组

多维数组

多维数组是包含一个或多个数组的数组

创建一个多维数组

$sites = array
    (
        "runoob"=>array
        (
            "php教程",
            "http://www.runoob.com"
        ),
        "google"=>array
        (
            "Google 搜索",
            "http://www.google.com"
        ),
        "taobao"=>array
        (
            "淘宝",
            "http://www.taobao.com"
        )
    );
print("<pre>"); // 格式化输出数组
print_r($sites);
print("</pre>");

格式化输出结果

Array
    (
       [runoob] => Array(
            [0] => php教程
            [1] => http://www.runoob.com
       )
       
       [google] => Array(
            [0] => google 搜索
            [1] => http://www.google.com
       )
       
       [taobao] => Array(
            [0] => 淘宝
            [1] => http://www.taobao.com
       )
    
)

输出数组

//根据格式化输出结果，输出某个值
    echo $sites['runboob'][0]   //php教程
    echo $sites['runboob'][1]   //http://www.runoob.com
    
    //数组循环
foreach($Array as $val){
   echo $val;
    
}
    
foreach($Array as $key => $val){
   echo $key.":".$val;
    
}