我试图在while循环中运行另一个while循环，但只有一个循环正在运行，即使我尝试通过alert回显整个sql语句，另一个也没有给出结果。任何人都可以帮忙吗？
//Insert Comments
public function Insert_Comment($uid,$msg_id,$comment,$ip,$cfid)
{
$comment=mysql_real_escape_string($comment);
$time=time();
$ip=$_SERVER['REMOTE_ADDR'];
$query = mysql_query("SELECT com_id,comment FROM `comments` WHERE uid_fk='$uid' and msg_id_fk='$msg_id' order by com_id desc limit 1 ") or die(mysql_error());
$result = mysql_fetch_array($query);
if ($comment!=$result['comment']) {
$query = mysql_query("INSERT INTO `comments` (comment, uid_fk,msg_id_fk,ip,created,cfid) VALUES (N'$comment', '$uid','$msg_id', '$ip','$time','$cfid')") or die(mysql_error());
$sql1=mysql_query("select * from users_profile where uid='$uid'");
while($row1=mysql_fetch_array($sql1))
{
$reqfname=$row1['fname'];
$reqpic=$row1['profile_pic'];
$reqsex=$row1['sex'];
$requid=$row1['uid'];
$notify = mysql_query("insert into notification(notification_id,type_id,item_id,user_id,owner_user_id,is_seen,time_stamp,title_html,title_text,body_html,body_text,href,icon_url)values('','wall_comments','4','$cfid','$uid','0',now(),'<b> Global Notification</b>','Global Notification','<img alt=notification icon src=$reqpic></span><span class=message>$reqfname shared view on your Status Update</span><span class=close></span>','$reqfname shared view on your Status Update','demo','')");
$dim=mysql_query("SELECT m.msg_id,m.uid_fk,c.com_id,c.msg_id_fk,c.uid_fk,c.cfid,n.type_id,n.user_id,n.owner_user_id,n.href,n.time_stamp from messages m ,comments c, notification n where m.msg_id=c.msg_id_fk and m.uid_fk=c.uid_fk and c.uid_fk=n.owner_user_id and c.cfid=n.user_id and n.type_id='wall_comments' and c.uid_fk=$uid and c.cfid=$cfid and n.href='$href' order by n.time_stamp desc");
while($rom=mysql_fetch_array($dim))
{
echo "SELECT m.msg_id,m.uid_fk,c.com_id,c.msg_id_fk,c.uid_fk,c.cfid,n.type_id,n.user_id,n.owner_user_id,n.href,n.time_stamp from messages m ,comments c, notification n where m.msg_id=c.msg_id_fk and m.uid_fk=c.uid_fk and c.uid_fk=n.owner_user_id and c.cfid=n.user_id and n.type_id='wall_comments' and c.uid_fk=$uid and c.cfid=$cfid and n.href='$href' order by n.time_stamp desc";
echo "man";
$oldhref=$rom['href'];
}
$newquery = mysql_query("SELECT C.com_id, C.uid_fk, C.comment, C.msg_id_fk, C.created, U.username FROM comments C, users U where C.uid_fk=U.uid and C.uid_fk='$uid' and C.msg_id_fk='$msg_id' order by C.com_id desc limit 1 ");
$result = mysql_fetch_array($newquery);
return $result;
}
}
else
{
return false;
}
}
在整个查询中，$ dim部分未运行[下面的代码]。当我尝试回显时，它显示为空，至少应该打印出sql查询。
$dim=mysql_query("SELECT m.msg_id,m.uid_fk,c.com_id,c.msg_id_fk,c.uid_fk,c.cfid,n.type_id,n.user_id,n.owner_user_id,n.href,n.time_stamp from messages m ,comments c, notification n where m.msg_id=c.msg_id_fk and m.uid_fk=c.uid_fk and c.uid_fk=n.owner_user_id and c.cfid=n.user_id and n.type_id='wall_comments' and c.uid_fk=$uid and c.cfid=$cfid and n.href='$href' order by n.time_stamp desc");
while($rom=mysql_fetch_array($dim))
{
echo "SELECT m.msg_id,m.uid_fk,c.com_id,c.msg_id_fk,c.uid_fk,c.cfid,n.type_id,n.user_id,n.owner_user_id,n.href,n.time_stamp from messages m ,comments c, notification n where m.msg_id=c.msg_id_fk and m.uid_fk=c.uid_fk and c.uid_fk=n.owner_user_id and c.cfid=n.user_id and n.type_id='wall_comments' and c.uid_fk=$uid and c.cfid=$cfid and n.href='$href' order by n.time_stamp desc";
echo "man";
$oldhref=$rom['href'];
}
答案 0 :(得分：-1)
在第一个while循环之前使用以下查询，
$sql1=mysql_query("select * from users_profile where uid=$uid");