รบกวนช่วยดูคำสั่ง update to sql ตรงนี้หน่อยครับว่าทำไมกด update แล้วข้อมูลมันไม่แก้ไขใหม่

<?php
require 'connect.php';
session_name('tzLogin');
session_set_cookie_params(2*7*24*60*60);
session_start();

$shop_id = $_POST["shop_id"];
$ser_id = $_POST["ser_id"];
$shop_name = $_POST["name"];
$address = $_POST["address"];
$shop_detail = $_POST["detail"];
$phone = $_POST["phone"];
$lat = $_POST["lat"];
$log = $_POST["log"];

$username = $_SESSION['user'];

$result = mysql_query("UPDATE `seniorpr_eb54-01`.`shop_info` SET `shop_id` = '".$shop_id."',`ser_id` = '".$ser_id."',`shop_name` = '".$shop_name."',`shop_detail` = '".$shop_detail."',`address` = '".$address."',`phone` = '".$phone."',`lat` = '".$lat."',`log` = '".$log."' WHERE `shop_id` = '".$shop_id."';");

	if (!$result) {
		die('Invalid query: ' . mysql_error());
	}else{
		header("Location: rr_manage_shop.php");
	}
mysql_close($con);
?>