mysql error ค่ะ You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')'

session_start();
$address = $_REQUEST["address"];
$roder_name = $_REQUEST["order_name"];
$cart = $_SESSION["cart"];
$order_date = date("d/m/y");
$error = "";
include('config.inc.php');
if($address =="")
{
	$error .= "คุณไม่ได้ระบุข้อมูล";
}
if($error =="")
{
	$sql = "INSERT INTO order_bill (shipping_address,order_name,order_date) values ('$address','$order_name',$order_date)";
$db_query = mysql_db_query($db_name,$sql);
echo $sql;
		foreach ($cart as $pro_id => $item)
			{
				$sql_detail = "INSERT INTO order_detail (amount_pro,pro_id,order_id) values ($item[amount],$pro_id,$order_id)";
				$db_query_detail = mysql_db_query($db_name,$sql_detail) or die (mysql_error());
			}
unset($_SESSION["cart"]);
}
if($error =="")
{
	$result = "ยืนยันการสั่งซื้อเรียบร้อย"."<a href = 'show_procudt.php'>สั่งซื้อใหม่</a>"
	."<a href = '#' onclick = 'history.back();"
	."return false;'>กลับไป</a>";
}

?>