/**
* Perform MySQL fetch and execute $callback on it returning the result
* @param mysqli_result $res
* @param function $callback
* @param DB\Fetch:: $format
* @return Array <int, mixed>
*/
function fetchCallback($res, $callback, $format = DBAL\Fetch::ALL_ASSOC)
{
return $res->FetchCallback($callback, $format);
}
