ช่วยดุ code ให้หน่อยคับ ทำมั้ยไม่ยอม update ***เหมือนจะง่ายแต่ก็ไม่ได้

<form action="bank.php" method="post">
      <div align="center">
        <input name="order_id" type="hidden" value="<?=$order_id ?>" />
        <input name="backurl" type="hidden" value="http://localhost/cm2icomputer/result.php" />
        <input name="submit" type="submit" id="submit" value="ชำระด้วยบัตรเครดิต" />
      </div>
    </form></td>

<form action="<?=$_POST["backurl"]?>" method="post">

	  <input type="hidden" name="order_id" value="<?=$_POST["order_id"]?>">
		<select name="status">
			<option value="approved">Approved</option>
			<option value="declined">Declined</option>
			<option value="canceled">Canceled</option>
	  </select>
		<input type="submit" value="ตกลง">
	</form>

<?
$host="localhost";
$username="root";
$pass_word="";
$db="dbchai";
$tb="company";
mysql_connect( $host,$username,$pass_word) or die ("?????????????????? Mysql ?????? ");
mysql_select_db($db) or die("????????????????????"); 
	
	$sql = "update orders set status='" . $_POST["status"] . 
"' where oid='" . $_POST["oid"] . "' and uid='" . $_COOKIE["uid"] . "'";
	mysql_query($sql);
	header("Location: index.php");
?>