我的问题是我想做一个数据库查找(选择)witz分类。^^在我的代码中看起来像这样:$return=$db->selectCollection($category)->find(array("time">$time_lastweek))->sort(array("rating/count_raitings"=>1,"count_raitings"=>1))->limit(10);我以前在SQL(PDO)中这样做过:$last_week=$dbh->prepare('SELECT*FROM'.$category.'WHEREtime>:zeitORDERBYrating/count_rai