@h4ckdr0 login sayfası bu şekilde fakat çalışmıyor

ob_start();
session_start();

include("../ayarlar/baglan.php");
include("../ayarlar/fonksiyon.php");
date_default_timezone_set('Europe/Istanbul');

if (isset($_POST['login'])){
    $userName = $_POST['userName'];
    $userPassword = md5($_POST['userPassword']);
    if ($userName && $userPassword) {
        $userFind = $db->prepare("SELECT * FROM users WHERE userName=:Name AND userPassword=:Password");
        $userFind -> execute(array('Name'=> $userName,'Password'=> $userPassword));
        $count=$userFind->rowCount();
        if ($count>0) {
            $_SESSION['userName'] = $userName;
            header ('location:index.php');
        } else {header ('location:login?action=error'); }
    }
}

$g_ayarSor=$db->prepare("select * from g_ayarlar where ga_id=1");
$g_ayarSor->execute(array(0));
$g_ayarCek=$g_ayarSor->fetch(PDO::FETCH_ASSOC);