Login codes

[eluser]davy_yg[/eluser]

Hello,

can anyone help me explain the following codes:

where does signed_in() come from ? If it is the extends of MY_Controller then, where can I find MY_Controller or is it a default code from CI ? Thanks before.

Code:

class Login extends MY_Controller {



public function index()

{

  if ($this->signed_in())

   redirect_admin();

  else

   $this->load->view('login');

}