Session value get deleted on page refresh in ci

Question

I have a login function. When I login, the session gets saved. But when I refresh the page or redirect to another function, then the session (userdata) is shown blank. I have loaded the session library in autoload, but the userdata is deleted after every page refresh.

Here is my code.

public function index () {
$user = $this->input->post('user');
// after successful user checking
$this->session->set_userdata('user', $user);
// when I print session here,
print_r($this->session->all_userdata());
// session user gets print
}

But when I redirect to a function (suppose 'test'), then no any session is shown.

public function test() {
print_r($this->session->all_userdata());
die;
}

Note: Codeigniter by default uses Cookie-based mechanism so it's provides limited storage. If you want to extend the storage limit you can configure it to store session data in database. Check CI Documentation. — Indrasinh Bihola
Ya but I'm not storing excessive data in session that my session gets deleted. — Sajan Gurung
Ok than try to debug in both functions using print_r($this->session); — Indrasinh Bihola

Daniel Daniel · Accepted Answer · 2014-11-26T17:29:22

When you read the post value with $this->input->post('user'); and there isn't any post the function returns null and save this in the user value.

You have to check before setting.

    if ($this->input->post('user')) {
        $this->session->set_userdata('username',  $this->input->post('user'));
    }

Session value get deleted on page refresh in ci

2 Answers