Running functions on every page load

[eluser]xtremer360[/eluser]
So your saying I can do something like this. If yes, then since my login controller extends the backend controller then it will run that if statement, correct?

Code:

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Backend_Controller extends MY_Controller {

public function __construct()
{
  parent::__construct();
  
  if (isset($this->session->userdata('xtr')) && is_integer($this->session->userdata('user_variable_id')))
  {
   redirect('login');
  }
  else
  {
   redirect('cpanel'};
  }
}
}