There is an error on the page when logging in. How to solve it?

Question

<?php
namespace app\index\controller;
use app\index\controller\Base;
class Index extends Base
{
public function index()
{
          $this->isLogin();     // Determine whether the user is logged in
                                                                                                                     .

Answer 1

$this->isLogin();

isLogin() This method is not in your class; you need to add a new isLogin();$this-> in the class to obtain the non-static properties of the current object For example:

class Index extends Base
{
   public function index()
   {
       $this->isLogin();   //判断用户是否登录
       return $this->view->fetch();
   }
   public isLogin(){
       #code 判断用户是否登录
   }
}

Answer 2

Then there must be something wrong with this method, isLogin()

Answer 3

After adding the following sentence, the page is wrong

$this->isLogin(); //Determine whether the user is logged in