Notice: Use of undefined constant product_price - assumed 'product_price' in D:\AppServ\www\washi\shop\add_order.php on line 171

	<table class="table table-bordered">
                	<tr>
                    	<td colspan="6">Method-1 : Male</td>
                    </tr>
                    <tr>
                        <td width="5%"> ลำดับ</td><td width="50%">รายการสินค้า</td><td width="10%">ราคา</td><td width="10%">จำนวน</td><td width="15%">ยอดรวม</td><td width="10%">Action</td>
                    </tr>
                    <?php  
				
							$qr_x =dbQuery("SELECT * FROM tbl_product where sex_status = 'x' ORDER BY product_name ASC");	
							$row =@mysql_num_rows($qr_x);
							 $i=0;
							while ($i<$row){
							$rs_x=mysql_fetch_array($qr_x);
							$product_id = $rs_x[product_id];                       //169
							$product_name = $rs_x[product_name];            //170
							$product_price = $rs_x[product_price];               //171
				?>   
                     <tr>
                        <td width="5%"><? echo $i;?></td><td width="50%"><? echo $product_name;?></td><td width="10%"><? echo $product_price;?></td><td width="10%">จำนวน</td><td width="15%">ยอดรวม</td><td width="10%">Action</td>
                    </tr>
                    <?
					$i++;
							}
					?>
                </table>