คับช่วยเพิ่มโค้ดบันทึกใบสั่งซื้อให้หน่อยได้ไหมอะคับ พอดีพึ่งศึกษา

<form id="frmcart" name="frmcart" method="post" action="process.php">
	<p>&nbsp;</p>
	<table width="600" border="0" align="center" class="square">
    <tr>
    	<td colspan="4" bgcolor="#FF9933"><strong>สั่งซื้อสินค้า</strong></td>
    </tr>
    <tr>
     <td bgcolor="#FF9966">สินค้า</td>
     <td align="center" bgcolor="#FF9966">จำนวน</td>
     <td align="center" bgcolor="#FF9966">ราคา</td>
     <td width="77" align"center" bgcolor="#FF9966">รวม/รายการ</td>
     </tr>
     <?php
	  if (!empty($_SESSION['cart']))
	  {
		  $k = 0;
		  foreach($_SESSION['cart'] as $item)
		  {
			  ?>
              <tr>
               <td width="375"><?php echo $item['nameproduct']?></td>
               <td width="69"> <input name="qty[]" type="text" id="sumprice[]" value="<?php echo $qty[$k]?>" size="3"
               style="text-align:right;" readonly="readonly" /> </td>
               <td width="59" align="center"> <?php echo $item['price']?>
               <input name="price[]" type="hidden" id="price<?php echo $k?>" value="<?php echo $item['price']?>" /> </td>
               <td align="left"> <?php $sumprice= (empty($qty[$k]))?$item['price']:$item['price']*$qty[$k];?>
               <input name="sumprice" type="text" id="sumprice<?php echo $k?>" value="<?php echo $sumprice?>" size="6"
               style="text-align:right;" readonly="readonly"/> </td>
               </tr>
               <?php
			    $k++;
		  		}
				?>
                <tr>
                	<td colspan="3" bgcolor="#0099FF">Total</td>
                    <td align="left" bgcolor="#0099FF">
                    <input name="totalprice" type="text" id="totalPrice" size="6" value="<?php echo $_POST['totalPrice']?>"
                    readonly="readonly" style="text-align:right;" /> </td>
                    </tr>
                    <?php
	  					}
	  				?>
                    <tr>
                    	<td colspan="4"> <table width="100%" border="0" cellspacing="0">
                        	<tr>
                            	<td colspan="2" bgcolor="#9999CC">รายละเอียดในการติดต่อ</td>
                                </tr>
                            <tr>
                            <?php
							$sql = "select * from customer where username='$username'";
							$query = mysql_query($sql) or die ("error=$sql");
							$row = mysql_fetch_array($query);
							?>
                            <td bgcolor="#999999">ชื่อ</td>
                            <td><input name="name" type="text" id="name" value="<?=$row['name']?>" /></td>
                            </tr>
                            <tr>
                            	<td width="22%" bgcolor="#999999">ที่อยู่</td>
                                <td width="78%"><textarea name="address" cols="35" rows="5" id="address"><?php print $row['address']?></textarea></td>
                                </tr>
                                <tr>
                                <td bgcolor="#999999">อีเมล์</td>
                                <td><input name="email" type="text" id="email" value="<?=$row['email']?>"/></td>
                                </tr>
                                <td bgcolor="#999999">เบอร์ติดต่อ</td>
                                <td><input name="phone" type="text" id="phone" value="<?=$row['phone']?>"/></td>
                                </tr>
                      </table></td>
                                </tr>
                                <tr>
                                	<td colspan="4" align="right"> <a href="product.php"></a>
                                    <input type="submit" name="Submit2" value="checkout" /></td>
                                    </tr>
                                    </table>                                                              
</form>

<?php
session_start();
			$qty = $_POST["qty"];
			$pro_id = $_POST["pro_id"];
			$pro_pri_total = $_POST["totalPrice"];
			$cus_id = $_POST["id"];
			$dates = date("d,m,y");
			
			$k=0;
			foreach($_SESSION['cart'] as $item)
			{
				$sql = "insert into  order(order_id,cus_id,pro_id,qty,pro_pri_total,dates) values('','$cus_id','$item['pro_id']','$qty['$k']','$item['pro_pri_total']'
						,'$date')";
				mysql_query($sql) or die ("error=$sql");
				$k++;
			}
			echo "<script>alert(' คุณได้สั่งซื้อสินค้าเรียบร้อยแล้ว ');window.location='howtoorder.php';</script>";		
?>