Hocam ben PDO ya göre yazdım sorguları. mysqli şekli de böyle

$query = mysqli_query($db,"SELECT modelKodu FROM test GROUP BY modelKodu");

foreach ($query as $item) {
$q = mysqli_query($db,"SELECT * FROM test WHERE modelKodu='{$item['modelKodu']}'");
foreach ($q as $key => $value) {
$number = $key + 1;
mysqli_query($db,"UPDATE test SET sss = '$number' WHERE id = '{$value['id']}'");
}
}