PDO and verot.net class upload delete

delete.php

public function sil($tablo,$id){
    $eski_resim="";
		$query = $this->db->query("SELECT * FROM $tablo  where id='$id'")->fetch(PDO::FETCH_ASSOC);
		if ($query){
		    $eski_resim=$query["resim"];
		} 
		unlink("../images/$tablo/$eski_resim");
		$stmt = $this->db->prepare("DELETE FROM $tablo WHERE id =  :id");
		$stmt->bindParam(':id', $id, PDO::PARAM_INT);   
		$sil =$stmt->execute(); 
		if ($sil){ 
		    print "Silme Başarılı.";
			echo "<script language='javascript'>location.href='index.php?sayfa=".$tablo."';</script>";
		}  
}

if($sayfa=="delete"){
	$id=$_GET["id"];
	$db_pdo->delete("slider",$id);
}