if($kactane >= 1){
print ("<script language='javascript'>alert('Daha Önce Oy Kullandiniz');history.go(-1);</script>");
    exit;
}else{
$sorgu=mysql_query("INSERT INTO oylama (oy, muzik_id, ip) values ('$oy', '$a', '$ip')");
print ("<script language='javascript'>alert('Oy Kullandiginiz İcin Tesekkürler');history.go(-1);</script>");
    exit;    
}

  $ip    = real_ip_adress();
$a=$_GET['muzik_id'];
$oy=$_POST['oy'];
$s=mysql_query("SELECT * FROM oylama where ip='$ip' and muzik_id='$a'");
$kactane=mysql_num_rows($s);
if($kactane>0){
print ('<script language="Javascript">
    alert("Daha Once Oy Kullandiniz");
    </script>');
}else{

$sorgu=mysql_query("INSERT INTO oylama (oy, muzik_id, ip) values ('$oy', '$a', '$ip')");
print ('<script language="Javascript">
    alert("Oy Kullandiginiz Icin Tesekkurler");
    </script>');
     }