zhangjingyu 
回帖标题“$rt”才是关键，追踪下。
$query = $db->query("SELECT p.pid,p.author,p.authorid,p.subject,p.postdate,p.content,p.anonymous,p.ifconvert,p.ifwordsfb,p.ifshield,m.uid,m.groupid,m.userstatus FROM $pw_posts p LEFT JOIN pw_members m ON p.authorid=m.uid WHERE tid=".S::sqlEscape($tid)."AND ifcheck='1' ORDER BY postdate DESC LIMIT 0,$db_showreplynum");
while ($rt = $db->fetch_array($query)) {