codeigniter中奇怪的会话行为

Question

Following code works fine ..

$somearray = getData();

$data = array(
    'user_display_name' => $userdisplayname,
    'username'  => $usernamefromdb,
    'logged_in'  => TRUE,
);
$this->session->set_userdata($data); // used to create user session

This works fine with codeigniter and sqlite..

But when i code

$data = array(
    'user_display_name' => $userdisplayname,
    'username'  => $usernamefromdb,
    'logged_in'  => TRUE,
    'arrdata' => $somearray
);

$this->session->set_userdata($data); // used to create user session

It says session terminated... What can be the issue?

When i do var_dump($somearray) it shows the info. Is there any memory limit for sessions??

Thanks

Answer 1

Codeigniter does not store all the session data in the Database natively (unlike what its makes you believe). It stores the data in the cookie which is limited to 4KB as pointed out by Jose Adrian.

To store all your session data in the DB, use this replacement session class: http://codeigniter.com/wiki/OB_Session/

Storing session data in the database will also be more secure than storing it in a cookie.