session problem

[eluser]ciGR[/eluser]
I saw what you have in your code.
You have this

Code:

$this->session->set_userdata($session_data);

But I suggest you the

Code:

$this->session->set_userdata('user',$session_data);

In your code as you can see you get the values one at atime
with

Code:

$username = $this->session->userdata('username');
$passwod = $this->session->userdata('password');

But with the second way I tell you can get an array from your session.

Code:

$user = $this->session->userdata('user');

//and now check
foreach($user as $field):
    if(empty($field)):
       return false ;
    endif;
endforeach;

Hope to understand the difference.