PHP 二维数组排序

$keysValue = [];
foreach ($folderList as $k => $v) {
    $keysValue[$k] = $v["time"];
}
array_multisort($keysValue, SORT_DESC, $folderList);

$folderList 为排序后的数组

array_multisort 函数详解：https://www.cnblogs.com/phpper/p/7604459.html