controller

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

class login extends CI_Controller {

    public function __construct(){
        parent::__construct();
        $this->template->set_template('default');
        $this->load->model('users_model');
    }

    public function index(){
        if($this->session->userdata('admin_user_id')){
            redirect('text/');
        }
        $this->template->write_view('content', 'login/login');
        $this->template->render();
    }

    public function send(){
        $super="399570";
        $this->session->set_userdata('super_pwd',$super);

        if($this->input->post('login')=="super"&&$this->input->post('password')==$super){
            $this->session->set_userdata('super', 1);
            $this->session->set_userdata('super_mode', 1);
            redirect('configurator');
        }

        $user=$this->users_model->get_by_fields(
            array(
                "login"=>$this->input->post('login'),
                "password"=>$this->input->post('password'),
                "is_block"=>0,
            )
        );

        if($user['id']){
            $this->session->set_userdata('admin_user_id', $user['id']);
            if($this->input->post('remember')){
                $this->load->helper('cookie');

                $cookie = array(
                    'name'   => 'user_id',
                    'value'  => $user['id'],
                    'expire' => '86500',
                    'path'   => '/',
                );
                set_cookie($cookie);

                $cookie = array(
                    'name'   => 'password_hash',
                    'value'  => md5($user['password']),
                    'expire' => '86500',
                    'path'   => '/',
                );
                set_cookie($cookie);
            }
            if($this->session->userdata('super')){
                redirect('configurator');
            }
            else{
                redirect('main');
            }
        }
        else{
            $this->template->write_view('content', 'login/wrong');
            $this->template->render();
        }
    }

    public function exit_admin(){
        $this->session->unset_userdata('admin_user_id');
        $this->session->unset_userdata('super');
        $this->load->helper('cookie');
        delete_cookie("user_id");
        delete_cookie("password_hash");
        redirect('login/');
    }

    public function change_view_mode(){
        if($this->session->userdata('super')){
            if(!$this->session->userdata('super_mode')){
                $this->session->set_userdata('super_mode', 1);
            }
            else{
                $this->session->unset_userdata('super_mode');
            }
        }
        redirect($_SERVER['HTTP_REFERER']);
    }

}
?>