<?php
  include_once 'DB.php';

$wynik = mysqli_query($con, "SELECT * FROM $tabela ORDER BY level DESC LIMIT 16")
or die('Błąd zapytania');

$array = mysqli_fetch_array($wynik);                          //fetch result


while($obj = mysqli_fetch_object($wynik)) {
$var[] = $obj;
}
echo '{"dane":'.json_encode($var).'}';
?>