如何在php中删除多维数组

function deleteArrayElement(&$array, $key) {
    foreach ($array as $k => &$value) {
        if ($k === $key) {
            unset($array[$k]);
        } elseif (is_array($value)) {
            deleteArrayElement($value, $key);
        }
    }
}

$array = array(
    'key1' => 'value1',
    'key2' => array(
        'subkey1' => 'subvalue1',
        'subkey2' => 'subvalue2'
    ),
    'key3' => 'value3'
);

deleteArrayElement($array, 'subkey1');
print_r($array);

Array
(
    [key1] => value1
    [key2] => Array
        (
            [subkey2] => subvalue2
        )

    [key3] => value3
)

function deleteArrayElement(&$array, $key) {
    $array = array_filter($array, function ($k) use ($key) {
        return $k !== $key;
    }, ARRAY_FILTER_USE_KEY);

    foreach ($array as &$value) {
        if (is_array($value)) {
            deleteArrayElement($value, $key);
        }
    }
}

$array = array(
    'key1' => 'value1',
    'key2' => array(
        'subkey1' => 'subvalue1',
        'subkey2' => 'subvalue2'
    ),
    'key3' => 'value3'
);

deleteArrayElement($array, 'subkey1');
print_r($array);

Array
(
    [key1] => value1
    [key2] => Array
        (
            [subkey2] => subvalue2
        )

    [key3] => value3
)