<!--{eval $fids = '2,36,37,39';$recs=array();$query=DB::query("SELECT * FROM ".DB::table('forum_forumrecommend')." where fid in ($fids) order by `tid` desc limit 10");while($item=DB::fetch($query))$recs[]=$item;}-->
<!--{loop $recs $rec}-->
<li><a href="forum.php?mod=viewthread&tid=$rec['tid']">$rec['subject']</a><span class="pipe">|</span>作者<!--{$rec['author']}--></li>
<!--{/loop}-->

那么代码：
<!--{eval $fids = '2,36,37,39';$recs=array();$query=DB::query("SELECT fid,max(tid) as tid,subject,tid,author  FROM ".DB::table('forum_forumrecommend')." where fid in ($fids) group by `fid` order by `tid` desc limit 10");while($item=DB::fetch($query))$recs[]=$item;}-->
<!--{loop $recs $rec}-->
<li><a href="forum.php?mod=viewthread&tid=$rec['tid']">$rec['subject']</a><span class="pipe">|</span>作者<!--{$rec['author']}--></li>
<!--{/loop}-->