yes,
Basically depending on what it is.... you need to add the field names into the authenticate function at the top.
Something like this:
$user = $userob -> authenticate("U_Title,U_Groups,U_Number");
$Username = $user['U_Username'];
$Password = $user['U_Password'];
$Usernumber = $user['U_Number'];
$Groups = $user['U_Groups'];
$Profile = $user['U_Title'];
Then use those variables as needed.