<?php 
    $sorufvr = $db->prepare('SELECT * WHERE user_id=:user_id and soru_id=:soru_id');
    $sorufvr->execute(array(':user_id'=>$user_id,':soru_id'=>$_GET['soru_id']));
    $sorufvr = $sorufvr->fetch();
    if ($sorufvr) {
     ?>
                                    <a href=""><button type="submit"  class="btn btn-warning btn-xs unlike" id=" <?php echo $sorufvr['soru_id']; ?> "><i class="fa fa-heart-o"></i> Fovorilerime Ekle</button></a>
                                    <?php } 
                                    else { ?>
                                    <button type="submit"  class="btn btn-warning btn-xs" id="<?php echo $sorufvr['soru_id']; ?>"><i class="fa fa-heart-o"></i> Fovorilerimden Çıkar</button>
                                    <?php }
?>