ผมทำระบบสั่งซื้อสินค้าครับ ติดอยู่ที่เดียวคือราคารวมสินค้ามันไม่ยอมแสดงครับช่วยดูให้ที

$sqlR = "select * from tb_orders where cus_id ='$_GET[cus_id]'";
			$res = mysql_db_query($db,$sql)or die($sqlR);
			while($rec = mysql_fetch_array($res)){ //หาออเดอร์ทั้งหมดของลูกค้า
				?>
      <table width="500" border="1" align="center" cellpadding="0" cellspacing="0" bordercolor="#111111" style="border-collapse: collapse; border: 1px dotted #008000">
      <tr>
        <th colspan="5" align="center" bgcolor="#FFFFCC" style="border: 1px dotted #008000" scope="col"><h3>Temporary orders</th>
        </tr>
      <tr>
        <th colspan="5" align="left" bgcolor="#FFFFCC" style="border: 1px dotted #008000" scope="col"></th>
        </tr>
      <tr>
        <th bgcolor="#FFFFCC" style="border: 1px dotted #008000" scope="col" align="left">Order_number : <?=$record[order_id]?></th>
        <th colspan="4" bgcolor="#FFFFCC" style="border: 1px dotted #008000" scope="col">Order_date : <?=$record[order_date]?></th>
        </tr>
      <tr>
        <th width="289" bgcolor="#FFFFCC" style="border: 1px dotted #008000" scope="col"><font color="#000080"></font><font color="#000080">Name</font></th>
        <th width="100" bgcolor="#FFFFCC" style="border: 1px dotted #008000" scope="col"><font color="#000080">Price</font></th>
        <th width="55" bgcolor="#FFFFCC" style="border: 1px dotted #008000" scope="col">
        <font color="#000080"><center>
          Num
        </center></font></th>
        <th colspan="2" bgcolor="#FFFFCC" style="border: 1px dotted #008000" scope="col">
          <font color="#000080"><center>
            <font color="#000080">Sum</font>
          </center></font></th>
        </tr><?
   $sqlQ = "select 	*
			from	tb_product as p,
					tb_order_dt as ot
			where	p.prod_id = ot.prod_id
			and		ot.order_id = '$rec[order_id]'
			order by ot.orderdt_id asc";
			$resultQ = mysql_db_query($db,$sqlQ)or die($sqlQ);
			while($recordQ = mysql_fetch_array($resultQ)){ //หาข้อมูลสินค้าที่ตรงกับรหัสสินค้าจากตาราง tb_order_dt
        ?>
        
        <tr><? if($resultQ[prod_prce2] != 0){ // ถ้าราคาสินค้าราคาสมาชิกไม่เท่ากับ0 ?>   
            <td width="550" align="left" bgcolor="#FFFFFF" style="border: 1px dotted #008000">              <h4 class="style1">&nbsp;<? echo $recordQ['prod_name_en']; ?>&nbsp;</h4></td>
            <td align="center" bgcolor="#FFFFFF" style="border: 1px dotted #008000"><h4 class="style2">&nbsp;<? echo number_format($recordQ['prod_price2'],2,'.',','); ?>&nbsp;</h4></td>
            <td align="center" bgcolor="#FFFFFF" style="border: 1px dotted #008000">
              <h4><? echo $recordQ['orderdt_qty']; ?></h4>

            </font></td>
            <td align="center" bgcolor="#FFFFFF" style="border: 1px dotted #008000"><h4 class="style2">&nbsp;<? echo number_format($recordQ['orderdt_qty'] * $recordQ['prod_price2'],2,'.',','); ?>&nbsp;</h4></td>
            <?   $total[$recordQ[order_id]] += $recordQ['orderdt_qty'] * $recordQ['prod_price2'];?>
        <? }else{?>
		            <td align="left" bgcolor="#FFFFFF" style="border: 1px dotted #008000">              <h4 class="style1">&nbsp;<? echo $recordQ['prod_name_en']; ?>&nbsp;</h4></td>
            <td align="center" bgcolor="#FFFFFF" style="border: 1px dotted #008000"><h4 class="style2">&nbsp;<? echo number_format($recordQ['prod_price'],2,'.',','); ?>&nbsp;</h4></td>
            <td align="center" bgcolor="#FFFFFF" style="border: 1px dotted #008000">
              <h4><? echo $recordQ['orderdt_qty']; ?></h4>

            </font></td>
            <td align="center" bgcolor="#FFFFFF" style="border: 1px dotted #008000"><h4 class="style2">&nbsp;<? echo number_format($recordQ['orderdt_qty'] * $recordQ['prod_price'],2,'.',','); ?>&nbsp;</h4></td>
            <?   $total[$recordQ[order_id]] += $recordQ['orderdt_qty'] * $recordQ['prod_price'];?>//ตรวจสอบราคา แล้วเก็บค่า

		<? } ?>
        </tr>
        
        <? }?>
        <tr bgcolor="#CCCCCC" id="total">    
            <td style="border: 1px dotted #008000" colspan="2" align="left">
              <h3><b><font color="#008000">&nbsp;&nbsp;Total price</font></b></h3></td>
            <td style="border: 1px dotted #008000" colspan="2">
              <h3 align="right"><b><font color="#008000"><? echo number_format($total[$recordQ['order_id']],2,'.',','); $cart = $total[$record[order_id]] ;?>&nbsp;&nbsp;Baht</font></b></h3></td>
            </tr>
    </table><br><br>
          <? } ?> 
<? }?>