$username = "user";
    $password = md5("pass");




$query = "SELECT * FROM Users WHERE Username='$username' and Password='$password'";
$result = mysqli_query($db, $query) or die(mysql_error());
$rows = mysqli_num_rows($result);
echo($result);
if ($rows==1) {
    echo ("Sucessfully logged in");
}
else
{
    echo ("ERROR: Username and password are incorrect");
}