CodeIgniter - How do I get session to detect whether user is logged in?

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I have very simple page that requires login to view. I have a login controller and view that will redirect to the main page after successful login. However, i want to detect whether user is logged in if the user directly access the main page link, if not logged in, then the user should be redirect back to the login page.

My Login controller:

<?php  
defined('BASEPATH') OR exit('No direct script access allowed');  

class Login extends CI_Controller {  

    public function index()  
    {  
        $this->load->view('login_view');  
    }  
    public function process()  
    {  
        $user = $this->input->post('user');  
        $pass = $this->input->post('pass');  
        if ($user=='admin' && $pass=='123')   
        {  
            $this->session->set_userdata(array('user'=>$user));  
            redirect("Report");
        }  
        else{  
            $data['error'] = 'Your Account is Invalid';  
            $this->load->view('login_view', $data);  
        }  
    }  
    public function logout()  
    {  
        $this->session->unset_userdata('user');  
        redirect("Login");  
    }  
}  
?>  

and my Login view:

<!DOCTYPE html>  
<html>  
<head>  
    <title>Login Page</title>  
</head>  
<body>  
    <?php echo isset($error) ? $error : ''; ?>  
    <form method="post" action="<?php echo base_url('Login/process'); ?>">  
        <table cellpadding="2" cellspacing="2">  
            <tr>  
                <td><th>Username:</th></td>  
                <td><input type="text" name="user"></td>  
            </tr>  
            <tr>  
                <td><th>Password:</th></td>  
                <td><input type="password" name="pass"></td>  
            </tr>  
            <tr>  
                <td> </td>  
                <td><input type="submit" value="Login"></td>  
            </tr>  
        </table>  
    </form>  
</body>  
</html>  

while the login process is working good, but i'm not sure how to get the session from my main page to detect whether user is logged in. I know i should add some validation in the main controller but i'm not sure how, please help thank you.

main controller:

<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class EstoreReport extends CI_Controller {

public function __construct() {
  parent::__construct();
  $this->load->model('ReportModel');
}

public function index()
{
   $report=new ReportModel;
   $data['data']=$report->get_report();
   $this->load->view('includes/header');
   $this->load->view('Report/list',$data);
   $this->load->view('includes/footer');
}

Just simple configure in your controller index(): Use $this->session->userdata('user') == NULL to check whether user is logged in

 public function index()
 {
   if($this->session->userdata('user') == NULL)
   { 
      redirect('Login');
   }
   else
   {
      $report=new ReportModel;
      $data['data']=$orders->get_report();
      $this->load->view('includes/header');
      $this->load->view('Report/list',$data);
      $this->load->view('includes/footer');
   }
}

CodeIgniter: checking if user logged in for multiple pages, You can remove the "allowed" bits if you want to restrict access to the whole thing​, if webmaster then check admin session else check user session * But there  You can call it where you want to check if the user is logged in or not. It will return true or false. If it return true then the user is logged in otherwise not – Exterminator Sep 13 '18 at 9:52

You can create a function and call it to check whether the user is logged in or not

 public function is_logged_in()
    {
        $user = $this->session->userdata('user_data');
        return isset($user);
    }

How to verify if a user is logged in?, What if I go to admin.php directly how do I verify if the user is logged in in your session, you can use both or either of them to check if the user is logged in. is when I want to find out which sessions are active in for example  CodeIgniter gives access to its session data through the same means, as it uses the session handlers’ mechanism provided by PHP. Using session data is as simple as manipulating (read, set and unset values) the $_SESSION array.

Assuming you have session helper autoloaded, just like validation on the Login controller, you could set the validation in the index method of the Main / Report controller :

<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class EstoreReport extends CI_Controller {

public function __construct() {
parent::__construct();
$this->load->model('ReportModel');
}

public function index()
{
    if (!isset($this->session->userdata('user'))) {
        redirect("Login");  
    } else {
        $report=new ReportModel;
        $data['data']=$report->get_report();
        $this->load->view('includes/header');
        $this->load->view('Report/list',$data);
        $this->load->view('includes/footer');
    }
}

How to check if a user logged in?, I can check and restrict access to certain methods or controllers by defining a helper method. PHP Code: you can use filter for that : https://codeigniter4.​github.io/CodeIgnitlters.html $session = Services::session(); if  User Agent Class¶ The User Agent Class provides functions that help identify information about the browser, mobile device, or robot visiting your site. In addition you can get referrer information as well as language and supported character-set information.

You could use $this->session->has_userdata() as per CI docs

So

// Write a boolean returning method
/**
* Returns if there is a user session
*
* @return bool
*/
public function isLoggedIn()
{
    return $this->session->has_userdata($some_defined_key_like_user_id);
}

...

// Then in your index controller method
/**
* Index controller method
*
* @return void
*/
public function index()
{
    $this->isLoggedIn() ? $this->load()->view('login') : redirect("Report");
}

Best way to check if user is logged in, as you can see I'm checking user session in every function, is this way if the user is logged (do not forget to load this class in order to access  User Login System is the most used feature in CodeIgniter application. Like the user authentication in PHP, the user login system can be easily implemented in CodeIgniter with the session. CodeIgniter framework provides many built-in libraries and helpers which helps to integrate registration and login functionality with MySQL database.

Try this

    class Login extends CI_Controller {

        public function __construct() {
            parent::__construct();
            $this->load->model('loginmodel', 'login');
            $this->load->library('form_validation');
        }

        public function index() {
            $this->load->view('admin/login');
        }

        // Check for user login process
        public function user_aouth() {

            $this->form_validation->set_rules('username', 'Username', 'trim|required');
            $this->form_validation->set_rules('password', 'Password', 'trim|required');

            if ($this->form_validation->run() == FALSE) {
                $this->session->set_flashdata('error', 'Invalid Username and Password');
                redirect('login');
            } else {
                $username = $this->input->post('username');
                $password = $this->input->post('password');
                $data = array(
                    'username' => $username,
                    'password' => $password
                );
                if ($this->login->check_valid_user_details($data)) {
                    $session_data = array(
                        'username' => $username
                    );
                    $this->session->set_userdata($session_data);
//redirect to admin user dashboard
                    redirect('dashboard');
                } else {
                    $this->session->set_flashdata('error', 'Invalid Username and Password');
                    redirect('login');
                }
            }
        }

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

    }

In your login model

public function check_valid_user_details($data) {
        $condition = "username=" . "'" . $data['username'] . "'" . "AND password=" . "'" . $data['password'] . "'";
        $c = $this->db->select('*')
                ->from('admin')
                ->where($condition)
                ->limit(1);
        $query = $this->db->get();

        if ($query->num_rows() == 1) {
            return $query->result();
        } else {
            return FALSE;
        }
    }

Use this at the top of every page under dashboard

 if($this->session->userdata('username') == NULL){ 
     redirect('login');
} 

session problem , i want check session active and redirect to login , session problem , i want check session active and redirect to login page for all page. Offline What did you Get? What did you Expect? Joined CodeIgniter Community 2009. ( Skype: insitfx ) Check to see if a user is logged in Whether to validate the user’s IP address when reading the session cookie. Note that some ISPs dynamically changes the IP, so if you want a non-expiring session you will likely set this to FALSE. sess_time_to_update: 300: Time in seconds (integer) This option controls how often the session class will regenerate itself and create a new session ID.

Session Library, The Session class permits you maintain a user's “state” and track their activity the session class will check to see if valid session cookie is sent by the user's browser. If a sessions cookie does not exist (or if it doesn't match one stored on the The userdata() method returns NULL if the item you are trying to access does  Check for existing users in database during signup process. Check for username and password in database and show their  information stored in database. Create session for admin panel, store users input data in session and destroy session(logout).

CodeIgniter 3 Tutorial 26 Check if User is Logged In (हिन्दी , Simple User Login Class CodeIgniter. user.php. <?php if ( ! defined('BASEPATH'​)) exit('No direct script access allowed');. /*. * statuses: * 0 - banned @inpput true or false for check email and ip default true. * */ if all good. * @optional can return all data from row return false;. } $this->CI->session->set_userdata(array(. This class is a basic attempt at a permission system for CI. Basically keys are stored in a database and retrieved based on a groupID which is stored in a session and usually attached to a user. Once the keys have been handed out to a logged in user, IF statements then decide whether or not a user has access to parts of a view file,

Simple User Login Class CodeIgniter · GitHub, Ion Auth. Ion Auth is a simple and lightweight authentication library for the CodeIgniter framework You should benchmark your server to find the best cost value. Extend the users session expiration on login. track_login_attempts Default is 'false' Track the number Check to see if the currently logged in user is an admin. In this post, i am going to teach you how you can create a login and registration system in Codeigniter Framework. I am also going to attach the entire code so you can download and run it in your local system and check it immediately. So, first of all, you need to download the Codeigniter […]

Comments
  • By using this method you will have repetitive if/else statements in every method. The smarter thing to do is call a 'is_loggedin' method that redirects to the login screen if user isn't logged in.
  • where do i call the function ? and what does $user return ?
  • You can call it where you want to check if the user is logged in or not. It will return true or false. If it return true then the user is logged in otherwise not
  • should i call this function in index() ? sorry i',m a very new codeigniter user