รบกวนดูโค้ดให้หน่อยค่ะ เรื่องการ edit update รูปภาพ มันไม่อัพเดทข้อมูลใหม่ค่ะ

     <tr>
<td ><div align="left">อัพโหลดรูปสินค้า</div></td>
 <td ><div align="left">
<img src='../img/<? echo $picturename ?>' /><br>
<input type="hidden" name="OldFile" value="<? echo $picturename ?>">
     <input type="file" name="file" />
 </div></td>
 </tr>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<?
include("config.inc.php");
$productID=$_POST['productID'];
$category=$_POST['category'];
$product_name=$_POST['product_name'];
$product_detail=$_POST['product_detail'];
$product_remain=$_POST['product_remain'];
$product_price=$_POST['price'];
$file=$_POST['file'];
mysql_query("UPDATE product SET cat_name='$category',productname ='$product_name',productdetail ='$product_detail',instock='$product_remain',price='$product_price',picturename ='$file' where productID='$productID' ") or die (mysql_error());

if($_FILES["file"]["name"] != "")
	{
		if(copy($_FILES["file"]["name"],"img/".$_FILES["file"]["name"]))
		{

			//*** Delete Old File ***//			
			@unlink("img/".$_POST["OldFile"]); }
			
			//*** Update New File ***//
mysql_query("UPDATE product SET picturename = '".$_FILES["file"]["name"]."' WHERE productID= '".$_POST["productID"]."' ") or die (mysql_error()) ; }

mysql_close();

echo "<script type=\"text/javascript\">
alert('แก้ไขเสร็จสิ้น!!')
window.location=\"show_product.php\";</script>";
?>