Codeigniter - PHP something wrong with Session

Question

I was surfing the net and found official page :

With Adding Custom Session Data paragraph

https://www.codeigniter.com/user_guide/libraries/sessions.html

I tried implement the code to mine but it still doesnt work:

public function login_validation(){
        $data = new stdClass();
        $this->load->database(); // load database
        $this->load->library('form_validation');
        $this->load->helper('url');
        $this->load->library('session');

        $this->form_validation->set_rules('email', 'email', 'required|trim|callback_validate_credentials');
        $this->form_validation->set_rules('password', 'password', 'required|trim', array(
            'required'      => 'Password field is empty'));

        $this->load->model("model_users");
        $email = $this->input->post('email');
        $user_id = $this->model_users->get_user_id($email);
        $user    = $this->model_users->get_user($user_id);

        if ($this->form_validation->run()){
            $newdata = array(
                   'username'  => 'johndoe',
                   'email'     => '[email protected]',
                   'logged_in' => TRUE
               );
            // $_SESSION['user_id']      = (bool)true;
            // $_SESSION['email']      = $this->input->post('email');
            // $_SESSION['logged_in']    = (bool)true;
            // $_SESSION['username']     = (string)$user->priv;
        $this->session->set_userdata($newdata);
        $this->members();
        } else{
            $this->login();
        }
    }

Im getting this error in this line - <?php echo $_SESSION['username']; ?> :

A PHP Error was encountered

Severity: Notice

Message: Undefined index: username

Filename: views/catalog.php

Line Number: 19

Backtrace:

I dont see any mistake and Im really anxious right now , because nothing is working. Sorry for bad formulation of question. If you need extra code lines just say I will paste it in pastebin.com

Catalog.php - pastebin.com/6bS8M0bQ

DjangoGuy
– DjangoGuy

2016-05-07 14:58:19 +00:00
Commented May 7, 2016 at 14:58 — DjangoGuy
– DjangoGuy, Commented May 7, 2016 at 14:58

Abdulla Nilam · Accepted Answer · 2016-05-07 15:04:13Z

1

Setting new session

$newdata = array(
   'username'  => 'johndoe',
   'email'     => '[email protected]',
   'logged_in' => TRUE
);

$this->session->set_userdata($newdata); # setting session data

Retrieving the session

$username = $this->session->userdata('username');

echo $username;

In view

echo $this->session->userdata('username');

Note:

If you want to passing the session data to view you can bind it with $data[] or in view can call it directly.

answered May 7, 2016 at 15:04

Abdulla Nilam

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5 Comments

DjangoGuy Over a year ago

Changed ti this - pastebin.com/KFZSUN4M , still same error. Message: Undefined index: username

Abdulla Nilam Over a year ago

Remove this <?php echo $_SESSION['username']; ?> and add this echo $this->session->userdata('username');

DjangoGuy Over a year ago

<?php if (isset($_SESSION['logged_in']) && $_SESSION['logged_in'] == true) : ?> 					<?php echo $this->session->userdata('username'); ?>

- changed. Now Im getting nothing. BLANK SPACE (probably because it is Null value) . Can we talk in private for a 5min? For example skype ?

Abdulla Nilam Over a year ago

tell me what the issue. In controller print the session and check

Abdulla Nilam Over a year ago

@DjangoGuy happy to help :)

Sagar Chapagain · Accepted Answer · 2016-05-07 18:42:26Z

0

Since PHP native session are not implemented in CI:2 so you can't use $_SESSION in codeigniter 2 rather you can use

$this->session->set_userdata('key','data');
//to fetch this session you can do
$this->session->userdata('key');

But due to some reason you need to implement PHP native session you can add this as a library Check library here

answered May 7, 2016 at 18:42

Sagar Chapagain

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