Не добавляет данные в базу

$product = $_SERVER['HTTP_REFERER'];
  $name = $_POST['name'];
  $phone = $_POST['phone'];
  $delivery = $_POST['delivery'];
  $adres = $_POST['adres'];
  $gorod = $_POST['gorod'];
  $indexx = $_POST['indexx'];
 
 
    $dbtype = "mysql";
    $dbhost = "localhost";
    $dbname = "kurs";
    $dbuser = "kurs";
    $dbpassword = "12345";  
 
$connection = mysql_connect($dbhost, $dbuser, $dbpassword);
mysql_query("SET NAMES utf8");
if(!$connection || !mysql_select_db($dbuser,$connection))
{
        return false;            
}
$query = mysql_query("INSERT INTO order (product, name, phone, indexx, gorod , adres, delivery) VALUES ('$product' ,'$name' ,'$phone' ,'$indexx' ,'$gorod' ,'$adres' ,'$delivery')");

$product = $_SERVER['HTTP_REFERER'];
$name = $_POST['name'];//и проверку на наличие желательно!!!
$phone = $_POST['phone'];//и защита не помешанет
$delivery = $_POST['delivery'];
$adres = $_POST['adres'];
$gorod = $_POST['gorod'];
$indexx = $_POST['indexx'];
 
$dbtype = "mysql";
$dbhost = "localhost";
$dbname = "kurs";
$dbuser = "kurs";
$dbpassword = "12345";  
 
mysql_connect($dbhost, $dbuser, $dbpassword)or die('Server!!!');;
mysql_select_db($dbuser,$connection) or die('DB!!!');
mysql_query("SET NAMES utf8");
 
mysql_query("INSERT INTO `order` (`product`, `name`, `phone`, `indexx`, `gorod` , `adres`, `delivery`) VALUES ('$product' ,'$name' ,'$phone' ,'$indexx' ,'$gorod' ,'$adres' ,'$delivery')")or die(mysql_error());