ช่วยดูโค็ต การบันทึกข้อมูลหน่อยครับ ยังไม่ได้เลย งง งง

<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<form name="form1" method="post" action="order_save.php">
<p>
                  <label></label>
                  <label class="menu_1">
                  <div align="left"><strong>วันที่ :
                    <input name="textfield" type="text" id="textfield" value="<? $today_date=date("d-M-Y");
echo "$today_date";
?>" size="18" readonly="readonly"/>
                  </strong></label>
                  <div align="left">


                    <p>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<?php
mysql_query("SET NAMES UTF8");
$customer_name = $_SESSION['customer_name'];
$customer_id = $_SESSION['customer_id'];
echo"รหัสลูกค้า : <b><input type=\"text\" name=\"customer_id\" value=\"beer123" . $customer_id ."\" readonly=\"readonly\"/></b>&nbsp;&nbsp;";
echo"ชื่อลูกค้า : <b><input type=\"text\" name=\"namecustomer\" value=\"" . $customer_name ."\" readonly=\"readonly\" /></b>";
?>
                    <p>
                        <?
			   require('conn_mysql.php');
		echo "<form action= method=POST name=frmMain><b>สินค้า:</b><select name=product onchange=frmMain.txtVol.value=this.value>";
	$sql = "select * from product order by product_name where product_name='$product_name' ";
	$first="";
	$result = mysql_query($sql);
	$array= mysql_fetch_array($result);
			if(!$first){ $first=$array[price]; }
	echo "<option class=style6  value=$array[product_name]>###--กรุณาเลือกสินค้า--###</option>";
	
	$sql = "select * from product order by product_name ";
	$result=mysql_query($sql);
		while($array = mysql_fetch_array($result))
	{				if(!$first){ $first=$array[product_price]; }
				echo "<option value =$array[product_price]>";
				echo " $array[product_name]<br>";
	}
	echo "</option></select>&nbsp;&nbsp;<b>ราคา:</b><input type=text name=txtVol size=20 value=$first readonly></form>";
	
	?>
  <table width="100%" border="0" cellpadding="0" cellspacing="0">
    <tr>
      <td><table width="100%" border="1" cellpadding="0" cellspacing="0">
        <?
    	include('conn_mysql.php');
		
		$sql = "select * from product ";
		$query = mysql_db_query($dbname,$sql)or die(mysql_error());
		if(mysql_num_rows($query)>0)
			{ 
    ?>
        <tr>
          <td width="5%"><div align="center"><font color="#FF0000">ลำดับ</font></div></td>
          <td width="29%"><div align="center"><font color="#FF0000">ชื่อสินค้า</font></div></td>
          <td width="16%"><div align="center"><font color="#FF0000">ราคา</font></div></td>
          <td width="17%"><div align="center"><font color="#FF0000">จำนวนที่ต้องการซื้อ</font></div></td>
          <td width="15%"><div align="center"><font color="#FF0000">รวมเงิน</font></div></td>
        </tr>
        <?
		while($rsst=mysql_fetch_object($query))
		{
			$product_id = $rsst-> product_id;
			$product_name = $rsst-> product_name;
			$product_price = $rsst->product_price;
			$x++;
    ?>
        <tr>
          <td><div align="center">
              <?=$x?>
              <input type="hidden" name="proid[<?=$x-1;?>]" id="proid[<?=$x-1;?>]" value="<?=$product_id?>">
          </div></td>
          <td><div align="center">
              <?=$product_name?>
          </div></td>
          <td><div align="center">
              <?=$product_price?>
          </div></td>
          <td><div align="center">
                <input type="text" name="quantity<?=$product_id?>" id="quantity<?=$product_id?>" autocomplete="off" onKeyDown=" if(this.value==0) this.value = '';"  onKeyUp="if(this.value==0) this.value=0;document.all.total<?=$product_id?>.value= parseFloat(document.all.quantity<?=$product_id?>.value)*<?=$product_price?>;" value="0">
              </div></td>
          <td><div align="center">
                <input type="text" name="total<?=$product_id?>" id="total<?=$product_id?>" value="0">
              </div></td>
        </tr>
        <?
		}
		}
			else
		{
			echo "<div align=\"center\"><font color=\"#FF0000\" size=\"2\">ไม่มีข้อมูล</font></div>";
		}
    ?>
      </table></td>
    </tr>
    <tr>
      <td>&nbsp;</td>
    </tr>
    <tr>
      <td><input type="submit" name="button" id="button" value="บันทึก"></td>
    </tr>
  </table>
</form>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<?
	include('conn_mysql.php');
	
	$customer_id = $_POST["customer_id"];
	$date = date("Y-m-d");
	
	for($i=0;$i<count($proid);$i++)
	{		
		$quantity = "quantity".$product_id[$i];
		$quantity = $_POST["$quantity"];
	
		
		$sql = "insert into aaa (customer_id,date) VALUES ('$customer_id','$date')";
		$query = mysql_db_query($dbname,$sql)or die(mysql_error()); 
		$sql2 = "insert into bbb (product_id,quantity) VALUES ('$product_id','$quantity')";
		$query = mysql_db_query($dbname,$sql2)or die(mysql_error()); 
		echo "<script>alert('บันทึกข้อมูลเรียบร้อย');</script>";
	}

	echo "<script>window.location='order.php';</script>";
	mysql_close();   
?>