ip กับวันที่ไม่แมตช์กับชื่อตรงคอลัมน์สุดท้าย last reply ช่วยดูให้ที่ครับ

<?php
	$keyword = $_GET[keyword];

	$db = new Mysql();
	$lastreply = array($row[topic_id][0],$row[topic_id][1],$row[topic_id][2]);
	
	// last reply
	$sql = "SELECT reply.topic_id,reply.reply_poster,reply.reply_date,reply.reply_ip,reply.reply_id
FROM reply,
   (SELECT max(reply_id) as maxid,topic_id
     FROM reply
     GROUP BY topic_id) maxresults
WHERE reply.topic_id = maxresults.topic_id
AND reply.reply_id= maxresults.maxid";
	$db->execute($sql);
	$num = $db->numrow();
	for ($i=1; $i<=$num; $i++){ 
		$row = $db->movenext();
		$lastreply[$row[topic_id][0]] = $row[reply_poster];
		$lastreply[$row[topic_id][1]] = $row[reply_ip];
		$lastreply[$row[topic_id][2]] = $row[reply_date];
	}
	
	$sql = "select * from topic";
	
	if ($keyword != "")
		$sql .= " where topic_name like '%$keyword%'";
	
	$sql .=	" order by topic_date desc";
	$db->execute($sql);
	$total = $db->numrow();
	if ($total==0 && $keyword!="")
		alertgo("Not Found Data !!!!","index.php");
	
	if ($total==0)
		exit("Not Found data !!!!");
	
		
	$total_page = ceil($total/PAGESIZE);
	
	$page = $_GET[page];
	if ($page=="")
		$page = 1;
	
	$start = ($page-1)*PAGESIZE;
	
	$sql .= " limit $start,".PAGESIZE;
	$db->execute($sql);
	$num = $db->numrow();
?>  
<?php  
	for ($i=1; $i<=$num; $i++){ 
		$row = $db->movenext();
?>  
  <tr bgcolor="<?php echo $color=($i%2==1)?'#FFFFFF':'#FFEFFF'; ?>" onmouseover="javascript:this.bgColor='#CCCCCC'" onmouseout="javascript:this.bgColor='<?php echo $color ?>'">
    <td><a href="add_view.php?t=<?php echo $row[topic_id] ?>" target="_blank">[#<?php echo str_pad($row[topic_id],5,"0",STR_PAD_LEFT) ?>] <?php echo $row[topic_name] ?></a><br />
    Date : <?php echo $row[topic_date] ?></td>
    <td><?php echo $row[topic_poster] ?> <br /><small>(Ip : <?php $ip = explode(".",$row[topic_ip]); echo "$ip[0].$ip[1].$ip[2].xxx"; ?>)</small></td>
    <td align="center"><?php echo $row[topic_view] ?></td>
    <td align="center"><?php echo $row[topic_reply] ?></td>
    <td><?php echo $lastreply[$row[topic_id][0]] ?> [<?php echo $lastreply[$row[topic_id][1]] ?>]<br />
    Date:<?php echo $lastreply[$row[topic_id][2]] ?></td>
  </tr>
<?php } ?>