如何从多维数组中删除数组？

Question

我有一个多维的动态数组，例如：

Array
(
    [0] => Array
        (
            [key] => delete
            [label] => hi Delete
        )

    [1] => Array
        (
            [key] => edit
            [label] => hi Edit
        )

    [2] => Array
        (
            [key] => update
            [label] => hi update
        )

)

现在我想从上面的多维数组中删除下面的数组：

Array
    (
        [key] => delete
        [label] => hi Delete
    )

最后我想要一个像这样的输出：

数组 (

    [0] => Array
        (
            [key] => edit
            [label] => hi Edit
        )

    [1] => Array
        (
            [key] => update
            [label] => hi update
        )

)

为此我已经尝试过了，下面是我的代码：

<?php
  $arr1 = array(array("key" => "delete", "label" => "hi Delete"),array("key" => "edit", "label" => "hi Edit"), array("key" => "update", "label" => "hi update"));
   $diff = array_diff_assoc($arr1, array("key" => "delete", "label" => "hi Delete"));
   print_r($diff);
?>

但我在输出中得到了完整的 $arr1：

Array
(
    [0] => Array
        (
            [key] => delete
            [label] => hi Delete
        )

    [1] => Array
        (
            [key] => edit
            [label] => hi Edit
        )

    [2] => Array
        (
            [key] => update
            [label] => hi update
        )

)

我该怎么做，请帮帮我

Answer 1

将array_filter 与callback 一起使用

$arr1 = array_filter($arr1, function ($var) {
    return $var['key'] != 'delete';
});
print_r($arr1);

Answer 2

您应该循环遍历数组并测试您要删除的键，如下所示：（盲写，所以您需要测试它！）

<?php
foreach ($arr1 as $thisArrIndex=>$subArray)
{
    if ( $subArray['key'] == "delete" )
    {
        unset($arr1[$thisArrIndex]);
    }
}
?>

建议的编辑是在找到密钥后跳出循环。看来 OP 可能有多个这样的键（在多个子数组中），所以我选择不在这里跳出循环。