PHP multidimensional array

The values ​​in one array can be another array, and the values ​​in another array can also be an array. In this way, we can create a two-dimensional or three-dimensional array:

<?php
// 二维数组:
$cars = array
(
    array("Volvo",100,96),
    array("BMW",60,59),
    array("Toyota",110,100)
);
print_r($cars); 
?>

PHP - Multidimensional Array

A multidimensional array is an array containing one or more arrays.

In a multi-dimensional array, each element in the main array can also be an array, and each element in the sub-array can also be an array.

Example

In this example, we create a multidimensional array with automatically assigned ID keys:

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

The above array will be output as follows:

Example 2

Let us try to display a certain value in the above array:

echo $sites['php'][0] . '地址为：' . $sites['php'][1];