<?PHP

$user = $_POST['user'];
$pass = $_POST['password'];

$con = mysql_connect("mysql.zzz.com.ua","tamtaram24","123456") or ("Cannot connect!"  . mysql_error());
if (!$con)
    die('Could not connect: ' . mysql_error());

mysql_select_db("tamtaram24" , $con) or die ("could not load the database" . mysql_error());

$check = mysql_query("SELECT * FROM tamtaram24 WHERE `User`='".$user."'");
$numrows = mysql_num_rows($check);
if ($numrows == 0)
{
    die ("Username does not exist \n");
}
else
{
    $pass = md5($pass);
    while($row = mysql_fetch_assoc($check))
    {
        if ($pass == $row['pass'])
            //Выбираем, то что прописано в базе
$query = "SELECT `id` FROM `Users` WHERE user='$user' AND pass='$pass'";
$res = mysql_query($query);
$userinfo=mysql_fetch_array($res);
$id= ''.$userinfo["id"].'';
echo "$id";
        //
        else
            die("Password does not match \n");
    }
}

?>