php根据session与cookie写的用户登录状态操作类

3. final class UserLogin {

4. public function __construct() {
5. }

6. public static function getUserInfo() {

7. if (isset($_COOKIE["user_id"])&&$_COOKIE["user_id"]&&(trim($_COOKIE["user_id"])!="")) {
8. if (isset($_SESSION["USER_INFO"]))
9. return $_SESSION["USER_INFO"];
10. $dao = new UserDao();
11. $user = $dao->find($_COOKIE["user_id"]);
12. if ($user) {
13. $_SESSION["USER_INFO"] = $user;
14. setcookie("docloud_sid", session_id(), time() + 36000);
15. setcookie("user_id", $_COOKIE["user_id"], time() + 36000);
17. if (array_key_exists("selected_prj_id", $_COOKIE))
18. setcookie("selected_prj_id", $_COOKIE["selected_prj_id"], time() + 36000);
20. if (array_key_exists("selected_class_id", $_COOKIE))
21. setcookie("selected_class_id", $_COOKIE["selected_class_id"], time() + 36000);
23. if (array_key_exists("selected_image_id", $_COOKIE))
24. setcookie("selected_image_id", $_COOKIE["selected_image_id"], time() + 36000);
26. if (array_key_exists("test_image_ids", $_COOKIE))
27. setcookie("test_image_ids", $_COOKIE["test_image_ids"], time() + 36000);
29. if (array_key_exists("upload_image_ids", $_COOKIE))
30. setcookie("upload_image_ids", $_COOKIE["upload_image_ids"], time() + 36000);
31. return $user;
32. }
33. }
34. self::clearCookie();
35. return null;
36. }

37. public static function setUserInfo($userInfo) {

38. $_SESSION["USER_INFO"] = $userInfo;
39. setcookie("docloud_sid", session_id(), time() + 36000);
40. setcookie("user_id", $userInfo->getId(), time() + 36000);
41. }

42. public static function isLogin() {

43. if (self::getUserInfo()) {
44. return true;
45. }
46. return false;
47. }

48. public static function delUserInfo() {

49. self::clearCookie();
50. session_destroy();
51. }
53. private static function clearCookie() {
54. setcookie("docloud_sid", "", time() - 36000);
55. setcookie("user_id", "", time() - 36000);
56. setcookie("selected_prj_id", "", time() - 36000);
57. setcookie("selected_class_id", "", time() - 36000);
58. setcookie("selected_image_id", "", time() - 36000);
59. setcookie("test_image_ids", "", time() - 36000);
60. setcookie("upload_image_ids", "", time() - 36000);
61. }
62. }
63. ?>

2、在用户输入用户名、密码处调用来做相关判定

3. require_once 'Init.php';

4. // if logged in, logout

5. if (UserLogin::isLogin() && $_COOKIE["user_id"]==1) {
6. UserLogin::delUserInfo();
7. }
8. else if (UserLogin::isLogin()){
9. Utils::redirect('welcome');
10. }

11. $username = null;

12. $password = null;

13. $msg = "";

14. if (isset($_POST['username']) && isset($_POST['password'])) {

15. $username = addslashes(trim(stripslashes($_POST ['username'])));
16. $password = addslashes(trim(stripslashes($_POST ['password'])));
17. // validate
18. $errors = LoginValidator::validate($username, $password);
20. if (empty($errors)) {
21. // save
22. $dao = new UserDao();
23. $user = $dao->findByName($username);
24. $last_login_ip = Utils::getIpAddress();
25. $user->setLastLoginIp($last_login_ip);
26. $now = new DateTime();
27. $user->setLastLoginTime($now);
28. $dao->save($user);
29. UserLogin::setUserInfo($user);
30. Flash::addFlash('登录成功！');
31. Utils::redirect('welcome');
32. }
34. foreach ($errors as $e) {
35. $msg .= $e->getMessage()."
    ";
36. }
37. }
38. ?>