Sample code analysis of PHP login timeout detection function

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The detailed explanation of the php login timeout detection function example

Foreword:

php login timeout problem, when the user does not operate the page for a certain period of time, he will automatically log out. The principle is to judge the access through js! The code is as follows (take thinkphp5.0 version as an example)

1. Create login section Controller:

<?php
namespace app\manage\control;
use \think\Controller;

class Main extends Controller{

 protected $request;

 public function _initialize(){
 $this->request = \think\Request::instance();
 }

 public function login(){
 if($this->request->method() == "POST"){
 $data = $this->request->param();
   //这里为登录验证(自行补充)
   .......
   //通过登录提交的信息获取数据库中的用户，并记录ID（$id）
   cookie(&#39;ADMIN_ID&#39;,$result["id"]);//cookie缓存
   cookie(&#39;LOGIN_TIME&#39;,Request::instance()->time()+3600);//记录登录时间，并缓存1小时

 }
 return view();
 }
 
 // 检测是否登录超时（js调用，url为：http://您的域名/manage/main/loginLosetime）
 public function loginLosetime(){
 $logintime = cookie(&#39;LOGIN_TIME&#39;);
 $time = request()->time();
 if($time > $logintime){
 return json([&#39;code&#39;=>1,&#39;msg&#39;=>&#39;登录超时！&#39;,&#39;url&#39;=>url(&#39;main/login&#39;)]);
 }else{
 return json([&#39;code&#39;=>0]);
 }
 }

}

2. Create Public controller (all controllers that require login verification inherit this controller)

<?php

namespace app\common\control;
use \think\Controller;
class AdminBase extends Controller{
 protected $request;
 public function _initialize(){
 parent::_initialize();
  $this->request = \think\Request::instance();
 $this->checkLogin();//检测登录
 $this->doAction();//记录动作
 }
 protected function checkLogin(){

 $cookie_admin_id = cookie(&#39;ADMIN_ID&#39;);
 if(!empty($cookie_admin_id)){
 //获取登录用户信息
   .......
 }else{
 if($this->request->isAjax()){
 return $this->error(&#39;您还没有登录！&#39;,url(&#39;main/login&#39;));
 }else{
 header("Location:".url("main/login"));
 exit();
 }
 }
 }
 // 页面操作记录
 protected function doAction(){
 $logintime = cookie(&#39;LOGIN_TIME&#39;);//获取缓存登录超时时间
 $time = request()->time();//当前时间
  //判断当前时间是否大于缓存时间 或者 超时时间小于60秒后，自动多加1个小时时间
 if($time > $logintime || ($time - $logintime) < 60){
 $newLogintime = $logintime + 3600;
 cookie(&#39;LOGIN_TIME&#39;,$newLogintime);
 }
 }
}

3, js file

$.ajaxSetup({
 cache: false
});
$(function(){
 setInterval(function() {
 loginLosetime()
 }, 360000);//设置1小时自动执行 loginLosetime 函数（时间可自行调整）
});
// 登录超时检测
function loginLosetime(){
 $.get(AJAX_URL+'main/loginLosetime',function(res){
 if(res.code == 1){
 window.location.href = res.url;
 }
 });
}

Finally, just call the appeal js file on all pages. There is no need to call it on the login page!

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