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下面小编就为大家带来一篇php同时使用session和cookie来保存用户登录信息的实现代码。小编觉得挺不错的，现在分享给大家，也给大家做个参考

1、用户登录状态操作类UserLogin

<?php

final class UserLogin {

 public function __construct() {

 }

 public static function getUserInfo() {

  if (isset($_COOKIE["user_id"])&&$_COOKIE["user_id"]&&(trim($_COOKIE["user_id"])!="")) {

   if (isset($_SESSION["USER_INFO"]))

    return $_SESSION["USER_INFO"];

   $dao = new UserDao();

   $user = $dao->find($_COOKIE["user_id"]);

   if ($user) {

    $_SESSION["USER_INFO"] = $user;

    setcookie("docloud_sid", session_id(), time() + 36000);

    setcookie("user_id", $_COOKIE["user_id"], time() + 36000);

    if (array_key_exists("selected_prj_id", $_COOKIE))

     setcookie("selected_prj_id", $_COOKIE["selected_prj_id"], time() + 36000);

    if (array_key_exists("selected_class_id", $_COOKIE))

     setcookie("selected_class_id", $_COOKIE["selected_class_id"], time() + 36000);

    if (array_key_exists("selected_image_id", $_COOKIE))

     setcookie("selected_image_id", $_COOKIE["selected_image_id"], time() + 36000);

    if (array_key_exists("test_image_ids", $_COOKIE))

     setcookie("test_image_ids", $_COOKIE["test_image_ids"], time() + 36000);

    if (array_key_exists("upload_image_ids", $_COOKIE))

     setcookie("upload_image_ids", $_COOKIE["upload_image_ids"], time() + 36000);

    return $user;

   }

  }

  self::clearCookie();

  return null;

 }

 public static function setUserInfo($userInfo) {

  $_SESSION["USER_INFO"] = $userInfo;

  setcookie("docloud_sid", session_id(), time() + 36000);

  setcookie("user_id", $userInfo->getId(), time() + 36000);

 }

 public static function isLogin() {

  if (self::getUserInfo()) {

   return true;

  }

  return false;

 }

 public static function delUserInfo() {

  self::clearCookie();

  session_destroy();

 }

 private static function clearCookie() {

  setcookie("docloud_sid", "", time() - 36000);

  setcookie("user_id", "", time() - 36000);

  setcookie("selected_prj_id", "", time() - 36000);

  setcookie("selected_class_id", "", time() - 36000);

  setcookie("selected_image_id", "", time() - 36000);

  setcookie("test_image_ids", "", time() - 36000);

  setcookie("upload_image_ids", "", time() - 36000);

 }

}

?>

2、在用户输入用户名、密码处调用来做相关判定

<?php

require_once 'Init.php';

// if logged in, logout

if (UserLogin::isLogin() && $_COOKIE["user_id"]==1) {

 UserLogin::delUserInfo();

}

else if (UserLogin::isLogin()){

 Utils::redirect('welcome');

}

$username = null;

$password = null;

$msg = "";

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

 $username = addslashes(trim(stripslashes($_POST ['username'])));

 $password = addslashes(trim(stripslashes($_POST ['password'])));

 // validate

 $errors = LoginValidator::validate($username, $password);

 if (empty($errors)) {

  // save

  $dao = new UserDao();

  $user = $dao->findByName($username);

  $last_login_ip = Utils::getIpAddress();

  $user->setLastLoginIp($last_login_ip);

  $now = new DateTime();

  $user->setLastLoginTime($now);

  $dao->save($user);

  UserLogin::setUserInfo($user);

  Flash::addFlash('登录成功！');

  Utils::redirect('welcome');

 }

 foreach ($errors as $e) {

  $msg .= $e->getMessage()."<br>";

 }

}

?>

以上这篇php同时使用session和cookie来保存用户登录信息的实现代码就是小编分享给大家的全部内容了，希望能给大家一个参考