Front_Controller::__construct PHP Method

    public function __construct()
    {
        parent::__construct();
        // Start the benchmark for timing
        $this->benchmark->mark('front_controller_start');
        // Check if the site is online
        if ($this->users_auth->get_data('user_group') > 1 && $this->config->item('site_offline')) {
            $error = $this->config->item('site_offline_msg') ? $this->config->item('site_offline_msg') : lang('site_offline');
            show_error($error);
        }
        // Check if the current page is to be ignored
        $current_page = $this->uri->uri_string();
        //echo $current_page;
        if (!strstr($current_page, 'login')) {
            $this->session->set_userdata('goto', $current_page);
        }
        // Can they view the site?
        if (!$this->users_auth->check_role('can_view_site')) {
            // Set an array of ignored pages.
            $ignored_pages = array('/users/login', '/users/logout', '/users/register', '/users/forgot', '/users/reset');
            $is_ignored_page = in_array($current_page, $ignored_pages);
            // Check the user is an admin
            if (!$is_ignored_page) {
                // They didn't pass the checks. Log them out.
                $this->users_auth->logout();
                // Now forward to login page.
                redirect('users/login');
            }
        }
        // Set the theme view folder
        $this->template->set_theme($this->settings->get_setting('site_theme'));
        // Set the layout file.
        $this->template->set_layout('layout');
        // Call Events
        $this->events->trigger('front_controller');
        // End the benchmark.
        $this->benchmark->mark('front_controller_end');
    }

 function __construct()
 {
     parent::__construct();
     $this->load->model('Category_model');
     $this->load->model('Product_model');
     $this->load->model('Option_model');
 }