zor bir hata baya aradım bulamadım

<?php
class baglan{
public $veritabani;
function __construct()
{
try  {
   $this->veritabani = new PDO("mysql:host=localhost;dbname=kisiler;charset=utf8", "root","123456");
   $this->veritabani->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
  
  
} catch (PDOException $e) {
   die($e->getMessege());
  
}
}
}
 
class anketana extends baglan{
Function Anketcek($i)
{
$sor=$this->veritabani->prepare("select * oylama where anketid=:anket");
$sor->execute(array("anket"=>$i));
if($sor->rowCount()>0)
{
Return $sor->fetch(PDO::FETCH_OBJ);
}
else{
print_r($this->veritabani->errorInfo());
}
}
}

case"sec1";
               $sutun="oy1";
               $veri=1;
               case"sec2";
               $sutun="oy2";
               $veri=1;
               case"sec3";
               $sutun="oy3";
               $veri=1;
               case"sec4";
               $sutun="oy4";
               $veri=1;
               default:
               endswitch;

   $sorgu5="insert into oylama (anketid,$sutun) VALUES ($anketid,$veri)";
            $getir5 = $veritabani->prepare($sorgu5);
            $getir5->execute();

if(isset($_POST))
{if(isset($_POST["anketid"]))
{
 if(!empty($_POST["buton"]))
{
$oy=$_POST["buton"];
$anket=$_POST["anketid"];
 $anket->oyver($oy,$anket);
}else
{
echo "Parametre hatası oy değeri gönderilmedi";
}
}
else{
echo "Parametre hatası Anket idsi gönderilmedi";
}
}else
{
echo "Form gonderilmedi kontrol et";
}

function oyver($oy,$anket,){
switch($oy)
{
case"sec1":
$sutun="oy1";
$veri=1;
break;
case"sec2";
$sutun="oy2":
$veri=1;
break;
case"sec3":
$sutun="oy3";
$veri=1;
break;
case"sec4";
$sutun="oy4";
$veri=1;
break;
default:
echo " oy yok ";
exit();
break;
}
$ip=$_SERVER['REMOTE_ADDR'];

$sorgu4="select * from oylama where anketid=:anket";

$getir4 = $veritabani->prepare($sorgu4);

$getir4->execute(array("anket"=>$anket));
if($getir4->rowCount()==0){
$sorgu5="insert into oylama (anketid,$sutun) VALUES (?,?)";
$getir5 = $veritabani->prepare($sorgu5);

$getir5->execute(array($anket,$veri));
$sorgu6="insert into ipkontrol (anketid,ip) VALUES (?,?)";
$getir6 = $veritabani->prepare($sorgu6);
$getir6->execute(array($anket,$ip));
echo"OYUNUZ ALINDI";
header("refresh:3,url=index.php" );
}else{
$sonki=$getir4->fetch(PDO::FETCH_ASSOC);
$mevcutdeger= $sonki[$sutun];
$sonveri=$mevcutdeger + 1;
$sorgu8="update oylama set $sutun=:veri where anketid=:anket";
$getir8 = $veritabani->prepare($sorgu8);
$getir8->execute(array("veri"=>$sonveri,"anket"=>$anket);
$sorgu7="insert into ipkontrol (anketid,ip) VALUES (?,?)";
$getir7 = $veritabani->prepare($sorgu7);
$getir6->execute(array($anket,$ip));

echo"OYUNUZ ALINDI";

header("refresh:3,url=index.php");

}

}

 (array($anket,$ip));