01.<?php
02. class Authen extends CI_Controller
03. {
04. function __construct()
05. {
06. parent::__construct();
07. $user=$this->session->userdata("SESS_USERNAME");
08. if($user!='')
09. {
10. redirect("/main","refresh");
11. }
12. }
13.
14. function index()
15. {
16. $this->load->view("login");
17. }
18. function chklogin()
19. {
20. $data["user"]=$this->input->post("username");
21. $data["pass"]=$this->input->post("password");
22. $this->load->model("Login_model");
23.
24. $num=$this->Login_model->checklogin($data);
25. if($num==0)
26. {
27. redirect("/loginerror","refresh");
28. }else
29. {
30. $this->session->set_userdata("SESS_USERNAME",$data['user']);
31. redirect("/main","refresh");
32. }
33. }
34.
35. function logout()
36. {
37. $this->session->unset_userdata("SESS_USERNAME");
38. $this->session->sess_destroy();
39. redirect("/authen","refresh");
40. }
41. }
42.?>
