PHP从mysql逆序

Question

我有这段代码:

return $this->db->query("SELECT * FROM `messages` where `toid`='$userid' and `fromid`='$userConvensation' or `fromid`='$userid' and `toid`='$userConvensation' order by `id` DESC LIMIT 10");

它需要 10 条最新消息。

但我需要 10 条最新消息，而且顺序相反。我该怎么做？

输出代码:

foreach($messages->result() as $thisMessage) {
//dostuff
}

Answer 1

子查询怎么样:

SELECT * FROM `messages` WHERE id IN (
  SELECT `id` FROM `messages` where `toid`='$userid' and
  `fromid`='$userConvensation' or `fromid`='$userid' and
  `toid`='$userConvensation' order by `id` DESC LIMIT 10
)
ORDER BY `id` ASC