错误：使用codeigniter登录和注销时 [英] Error: while login and logout using codeigniter

问题描述

登录和注销工作正常，但是，从页面注销后，即时消息仍然能够访问该页面，例如，如果我用作codeigniter_try / index.php / Home / backend，则使用url显示其不应显示的页面碰巧，我的意思是说仅当我使用用户名和密码登录时，它才应该显示。

The login and logout is working fine but, after getting logout from the page im still able to access that page, for example in url if i use as codeigniter_try/index.php/Home/backend its displaying the page which should not happen, i mean to say it should display only when i loggedin with the username and password. what issue im facing here can any one guide me ?

这是我的Controller.php

This is my Controller.php

//-------this is Login method --------
public function login()
{
    if($this->input->post('login'))
    {
        $username=$this->input->post('username');
        $password=md5($this->input->post('password'));
        $query=$this->db->query("select * from login where username='".$username."' and password='$password'");
        $row = $query->num_rows();
        if($row)
        {
            $newdata=array(
                'username' => $this->input->post('username'),
                'password' => md5($this->input->post('password')),
                'is_logged_in'=>TRUE
            );
            $this->session->set_userdata($newdata);
            redirect('Home/Backend');
        }
        else
        {
            $data['error']="<h3 style='color:red'>Invalid login details</h3>";
        }   
    }

    $this->load->view('login',@$data);      
}

//---------this is Logout method --------
public function logout()
{
    $this->session->unset_userdata($newdata);
$this->session->sess_destroy();
redirect('Home/login');
}

//-------Backend page---------

     public function Backend()
   {
     $this->load->view('backend');
     }

推荐答案

希望这会帮助您：

您的注销方法应如下所示：

your logout method should be like this :

public function logout()
{
    $this->session->sess_destroy();
    redirect('Home/login');
} 

您的后端应该是这样的：您必须在所有控制器中检查它

Your Backend should be like this : you have to check it in all controllers

public function Backend()
{ 
   if (! $this->session->userdata('is_logged_in')) redirect('Home/login'); 
   $this->load->view('backend'); 
} 

更多： https://www.codeigniter.com/user_guide/libraries/sessions.html#destroying-a-session

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