try {
     $db = new PDO("mysql:host=localhost;dbname=dbisim;charset=utf8", "root", "sifre");
} catch ( PDOException $e ){
     print $e->getMessage();
}
 
 
 $sql = $db->prepare("SELECT uid, urunisim, qty, fiyat, resim_url FROM urunler ORDER BY uid DESC");
				$sql->execute();
				
				while($row=$sql->fetch(PDO::FETCH_ASSOC)) {
				
				$data[] = $row;		
				}

echo json_encode($data);