codeigniter session login problem

Generate a session to know if the admin is logged in--. $this-session-set_userdata ('is_admin_login', 1) Check if the session is generated on your login url (controller)--. function index () { if ($this-session-userdata ('is_admin_login')) { redirect ('admin/home'); // redirect to desired location } $datatitle ['title'] = 'Login LPPM UTY'; login joker123