多维数组获取失败

Question

我有一个名为$grouped_types的数组。当我打印它时，显示如下：

Array
(
[XMU_1_1] => Array
    (
        [0] => Array
            (
                [port] => 1
                [band] => 
                [name] => XMU_1_1
            )

        [1] => Array
            (
                [port] => 2
                [band] => 
                [name] => XMU_1_1
            )

        [2] => Array
            (
                [port] => 3
                [band] => 
                [name] => XMU_1_1
            )

        [3] => Array
            (
                [port] => 4
                [band] => 
                [name] => XMU_1_1
            )

        [4] => Array
            (
                [port] => 5
                [band] => 
                [name] => XMU_1_1
            )

        [5] => Array
            (
                [port] => 6
                [band] => 
                [name] => XMU_1_1
            )

        [6] => Array
            (
                [port] => 7
                [band] => 
                [name] => XMU_1_1
            )

        [7] => Array
            (
                [port] => 8
                [band] => 
                [name] => XMU_1_1
            )

        [8] => Array
            (
                [port] => 9
                [band] => 
                [name] => XMU_1_1
            )

        [9] => Array
            (
                [port] => 10
                [band] => 
                [name] => XMU_1_1
            )

        [10] => Array
            (
                [port] => 11
                [band] => 
                [name] => XMU_1_1
            )

        [11] => Array
            (
                [port] => 12
                [band] => 
                [name] => XMU_1_1
            )

        [12] => Array
            (
                [port] => 13
                [band] => 
                [name] => XMU_1_1
            )

        [13] => Array
            (
                [port] => 14
                [band] => 700
                [name] => XMU_1_1
            )

        [14] => Array
            (
                [port] => 15
                [band] => 
                [name] => XMU_1_1
            )

        [15] => Array
            (
                [port] => 16
                [band] => 
                [name] => XMU_1_1
            )
    )

[DUS_1_1] => Array
    (
        [0] => Array
            (
                [port] => A
                [band] => 
                [name] => DUS_1_1
            )

        [1] => Array
            (
                [port] => B
                [band] => 
                [name] => DUS_1_1
            )

        [2] => Array
            (
                [port] => C
                [band] => 
                [name] => DUS_1_1
            )

        [3] => Array
            (
                [port] => D
                [band] => 
                [name] => DUS_1_1
            )

        [4] => Array
            (
                [port] => E
                [band] => 
                [name] => DUS_1_1
            )

        [5] => Array
            (
                [port] => F
                [band] => 
                [name] => DUS_1_1
            )
    )

[DUS_1_2] => Array
    (
        [0] => Array
            (
                [port] => A
                [band] => 
                [name] => DUS_1_2
            )

        [1] => Array
            (
                [port] => B
                [band] => 
                [name] => DUS_1_2
            )

        [2] => Array
            (
                [port] => C
                [band] => 
                [name] => DUS_1_2
            )

        [3] => Array
            (
                [port] => D
                [band] => 
                [name] => DUS_1_2
            )

        [4] => Array
            (
                [port] => E
                [band] => 
                [name] => DUS_1_2
            )

        [5] => Array
            (
                [port] => F
                [band] => 
                [name] => DUS_1_2
            )
    )
)

现在我希望这个数组在表格中显示如下：

XMU_1_1 port    XMU_1_1 band

1               
2
3
4
5
6
7
8
9
10
11
12
13
14                 700
15
16

这只是我想要的每个不同名称的一个名称。每个名字都应该有不同的表格。如何获取我的数组，以便我可以为不同的表显示它？我尝试过，但我不知道如何获取这种类型的数组。

Answer 1

循环遍历数组的最简单方法是使用foreach()循环。使用多维数组，您必须有一个或两个嵌套foreach()循环，如代码中所示片段。我不是说这正是适合你的代码;它只是为了说明嵌套的foreach（）循环是什么样的。希望它可以帮助你解决问题

LIVE DEMO

<?php 

echo "<table>";
foreach ($grouped_types as $k => $val) {
    echo "<tr>
            <th>$k port </th>
            <th>$k band </th>
          </tr>";
    if (is_array($val)) {
        foreach ($val as $v) {
            echo "<tr>
                    <td>" . $v['port'] . "</td>
                    <td>" . $v['band'] . "</td>
                  </tr>";
        }
    }

}
echo "</table>";

?>

<强>输出：

Answer 2

根据您的数组，这将使用foreach()循环按要求执行。

$array = [

"XMU_1_1" =>[

            [

            "port" => 1,
            "band" => null,
            "name" => "XMU_1_1",

            ],
            [

            "port" => 2,
            "band" => null,
            "name" => "XMU_1_1",

            ],
            [

            "port" => 3,
            "band" => null,
            "name" => "XMU_1_1",

            ],
            [

            "port" => 4,
            "band" => 700,
            "name" => "XMU_1_1",

            ],    
    ]  
];


echo "<table>";
echo "<tr><th>XMU_1_1 port</th><th>XMU_1_1 band</th></tr>";   

foreach($array['XMU_1_1'] as $v) {

    echo "<tr><td>" . $v['port'] . "</td><td>" . $v['band'] . "</td></tr>"; 

} 

echo "</table>";

<强>输出

XMU_1_1 port    XMU_1_1 band
1   
2   
3   
4   700