ThinkPHP3.2.2實現持久登錄(記住我)功能的方法_php實例

+------------+-------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+------------+-------------+------+-----+---------+----------------+
| uid | int(11) | NO | PRI | NULL | auto_increment |
| uname | varchar(20) | YES | | NULL | |
| upwd | varchar(20) | YES | | NULL | |
| uflag | int(11) | YES | | NULL | |
| identifier | varchar(32) | YES | | NULL | |
| token | varchar(32) | YES | | NULL | |
| timeout | int(11) | YES | | NULL | |
+------------+-------------+------+-----+---------+----------------+

<?php
namespace Test\Controller;
use Think\Controller;
class TestController extends Controller {
 public function login(){
 //判斷是否永久登錄
 $this->checkLong();
 //已經登錄則跳轉至個人中心
 if(isset($_SESSION['username'])){
 $this->redirect('Test/ucenter');
 }else{
 //判斷是否存在cookie
 if(isset($_COOKIE['username'])){
 $this->assign('username',$_COOKIE['username']);
 }
 //顯示注冊頁
 $this->display("test");
 }
 }
 //顯示驗證碼
 public function verifyImg(){
 $verify = new \Think\Verify();
 //$verify->useZh = true; //使用中文驗證碼
 $verify->length = 4; 
 $verify->entry();
 }
 //驗證登錄
 public function check(){
 $verify = new \Think\Verify();
 if($verify->check(I("yzm"))){
 //判斷用戶名密碼
 $user = new \Test\Model\TestModel();
 $res = $user->checkName(I("username"),I("pwd"));
 if($res === false){
 echo "用戶名或密碼錯誤";
 }else{
 //用戶信息存入session
 session("username",$res['uname']);
 session("id",$res['uid']);
 //如果用戶勾選了"記住我",則保持持久登陸
 if(I("remember")){
 $salt = $this->random_str(16);
 //第二分身標識
 $identifier = md5($salt . md5(I("username") . $salt));
 //永久登錄標識
 $token = md5(uniqid(rand(), true));
 //永久登錄超時時間(1周)
 $timeout = time()+3600*24*7;
 //存入cookie
 setcookie('auth',"$identifier:$token",$timeout);
 $user->saveRemember($res['uid'],$identifier,$token,$timeout);
 }
 //把用戶名存入cookie，退出登錄后在表單保存用戶名信息
 setcookie('username',I('username'),time()+3600*24);
 //跳轉至會員中心
 $this->redirect('Test/ucenter');
 }
 }else{
 echo "輸入錯誤";
 }
 } 
 //測試strstr函數
 public function strstrtest(){
 $param = "Think\Verify";
 //第三個參數為true，返回'Think'；沒有第三個參數，返回'\Verify'
 $name = strstr($param,'\\',true);
 echo $name;
 }
 //用戶中心
 public function ucenter(){
 //判斷是否永久登錄
 $this->checkLong();
 $this->assign("session",$_SESSION);
 $this->display("ucenter");
 }
 //退出登錄
 public function loginout(){
 session(null);
 setcookie('auth', '', time()-1);
 $this->redirect("Test/login");
 }
 //生成隨機數,用于生成salt
 public function random_str($length){
 //生成一個包含 大寫英文字母, 小寫英文字母, 數字 的數組
 $arr = array_merge(range(0, 9), range('a', 'z'), range('A', 'Z'));
 $str = '';
 $arr_len = count($arr);
 for ($i = 0; $i < $length; $i++){
 $rand = mt_rand(0, $arr_len-1);
 $str.=$arr[$rand];
 }
 return $str;
 }
 //判斷是否持久登錄
 public function checkLong(){
 $check = new \Test\Model\TestModel();
 $is_long = $check->checkRemember();
 if($is_long === false){
 }else{
 session("username",$is_long['uname']);
 session("id",$is_long['uid']);
 }
 }
}

<?php
namespace Test\Model;
use Think\Model;
class TestModel extends Model{
 //驗證登錄信息
 public function checkName($name,$pwd){
 $admin = M("admin");
 $info = $admin->getByUname($name);
 if($info != null){
 //驗證密碼
 if($info['upwd'] == $pwd){
 return $info;
 }else{
 return false;
 }
 }else{
 return false;
 }
 }
 //當用戶勾選"記住我"
 public function saveRemember($uid,$identifier,$token,$timeout){
 $admin = M("admin");
 $data['identifier'] = $identifier;
 $data['token'] = $token;
 $data['timeout'] = $timeout;
 $where = " uid = ".$uid;
 $res = $admin->data($data)->where($where)->save();
 return $res;
 }
 //驗證用戶是否永久登錄（記住我）
 public function checkRemember(){
 $arr = array();
 $now = time();
 list($identifier,$token) = explode(':',$_COOKIE['auth']);
 if (ctype_alnum($identifier) && ctype_alnum($token)){
 $arr['identifier'] = $identifier;
 $arr['token'] = $token;
 }else{
 return false;
 }
 $admin = M("admin");
 $info = $admin->getByidentifier($arr['identifier']);
 if($info != null){
 if($arr['token'] != $info['token']){
 return false;
 }else if($now > $info['timeout']){
 return false;
 }else{
 return $info;
 }
 }else{
 return false;
 }
 }
}