konek mysqli dgn tambahan2

begin testing<?php
echo "siap???";
error_reporting(E_ALL);
$db = new mysqli("localhost","root","toor","db");
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$query = "select * from tbl_users";
$result = $db->query($query);
echo $result->username;