Database library Bug??

[eluser]jaswinder_rana[/eluser]
I am using DX Auth library for authentication.

I tried following code

Code:

$user = '';
$obj = $this->users_model->get_user_by_username($user)->result();
print_r($obj[0];

It returns ALL users. It shouldn't return any user.

I enabled profiler and it's running following query

Code:

SELECT *
FROM (`users`)
WHERE `username` = 0

I am guessing that if it's empty, it changes it to 0.

Is this how it's supposed to work?

Thanks