ThinkPHP/---合並數組后按時間排序

$arr = array_merge($data,$human);
$ctime_str = array();
foreach ($arr as $key => $v) {
    $arr[$key]['ctime_str'] = strtotime($v['ts']);
    $ctime_str[] = $arr[$key]['ctime_str'];
}
array_multisort($ctime_str, SORT_DESC, $arr);