แสดงกระทู้ที่มีการตอบล่าสุดค่ะ ไม่ทราบว่าเขียนหรือแก้ตาม code นี้ยังไงคะ

<?
$page = $_GET['page'];

$select_type="select * from webboard order by id desc";
$query_select=mysql_query($select_type);
$num_rows=mysql_num_rows($query_select);

if($num_rows<1){
echo "<br><br><center><font color=#666666 face=tahoma size=2><b>ไม่พบข้อมูลใด ๆ ในฐานข้อมูลค่ะ</b></font></center>";
}else{

		$select="select * from webboard order by id desc";
		$q_ry = mysql_query($select);
	 	$num_rows=mysql_num_rows($q_ry);
  		$pagesize=25;
		$rt=$num_rows%$pagesize;
		if($rt!=0)
			{
				$totalpage=floor($num_rows/$pagesize)+1;
			}
		else
			{
				$totalpage=floor($num_rows/$pagesize);
				$toppic_id=1;
			}
		if(empty($page))
			{
				$page=1;
			}
		mysql_free_result($q_ry);
		$goto=($page-1)*$pagesize;
$sql_select_mem="Select * From webboard order by id desc limit $goto,$pagesize";
		$fect=mysql_query($sql_select_mem);
		if(!$fect)
		{
		("ติดต่อฐานข้อมูลไม่ได้".mysql_error());
		exit;
		}

	  $bgcount=0;
	while($rows=mysql_fetch_array($fect))
	{
$id =$rows['id'];
$topic =$rows['topic'];
$name =$rows['name'];
$photo1 =$rows['photo1'];
$read1 =$rows['read1'];
$dateregist =$rows['dateregist'];
$bgcount=$bgcount+1;
$bgmod=$bgcount%2;
if($bgmod==0){
	$bgcolor="#ffffff";
}else{
	$bgcolor="#ffffff";
}
	?>