echo "Abone olduğunuz için teşekkür ederiz. header('Location: urunler/tumurunler.php?action=city&city_id=$email_city'); ";

 <?php
if(isset($_REQUEST['email_id']) && $_REQUEST['email_id']!='')
{
    $email_city  = $_REQUEST['email_city']; 
     $already  = $object->cond_select('ebulten','email_id','email_id="'.$_REQUEST['email_id'].'"');
    if($already=='')
    {
    $sql = mkr_query("INSERT INTO `ebulten` ( `email_id`,city_id, `post_dt`) VALUES ( '".$_REQUEST['email_id']."', '".$email_city."', now())");
   header('Location: urunler/tumurunler.php?action=city&city_id=$email_city');  
    }
    else
    {
        echo "Bu mail zaten var!";
    }
}
?>