如何在多维数组中按全键搜索值，并得到匹配数据php的键值？

function searchValueInArray($array, $value) {
    foreach ($array as $key => $val) {
        if ($val === $value) {
            return $key;
        }
        if (is_array($val)) {
            $result = searchValueInArray($val, $value);
            if ($result !== false) {
                return $key . '.' . $result;
            }
        }
    }
    return false;
}

// 示例多维数组
$array = array(
    'key1' => 'value1',
    'key2' => array(
        'subkey1' => 'subvalue1',
        'subkey2' => 'subvalue2',
        'subkey3' => array(
            'subsubkey1' => 'subsubvalue1',
            'subsubkey2' => 'subsubvalue2'
        )
    ),
    'key3' => 'value3'
);

// 搜索值为'subsubvalue2'的键值
$result = searchValueInArray($array, 'subsubvalue2');
echo $result;