Why can I access it directly even if I set the judgment?

Question

<?php

namespace app\admins\controller;

use think\Controller;

use Util\data\Sysdb;

/**

* 

*/

class BaseAdmin extends Controller

{//Account’s session data uses admin as the basis to determine whether the user is logged in. If there is no admin, no user will come in

public function __construct(){

parent::__construct();

//Assign sesson data to admin

$this->_admin = session ('admin');

if (!$this->_admin) {

// //If session has no value, it is judged that the user is not logged in and jumps to the login page

header('Location: /admins.php/admins/Account/login');

exit;

}

}

}

Answer 1

Change the browser and visit http://www.php.demo/admins.php/admins/Home/index

Answer 2

Solve it

Answer 3

Add dump($this->_admin) in front of if and take a look

Answer 4

Or delete the above and replace if directly

if (!session('?admin'))

Answer 5

How to use is_set when judging in if