BM_Controller.php

<?php


class BM_Controller extends CI_Controller {
    function __construct() {
        parent::__construct();

        $logged = $this->check_login();
        $cArray = array('login', 'logout');
        $this->load->helper('url');
        if ($logged == 0 && !in_array($this->uri->segment(1), $cArray) && !in_array($this->uri->segment(2), $cArray)) {
            redirect('/login');
        }
    }

    function check_login() {
        $logged_in = 0;
        $user = $this->session->userdata('user');
        if (isset($user)) {
            if ($user['intime'] > time() - 3600) {
                $user['intime'] = time();
                $this->session->set_userdata('user', $user);
                $logged_in = 1;
            } else {
                $this->session->unset_userdata('user');
                $logged_in = 0;
            }
        }
        return $logged_in;
    }
}