Crossing sessions data

Personally I'm storing my main session in files (user_id,login_time) instead of database. And saving additional content in the database. Always checking on every refresh if the information on file match the one in the database, and if the user have been deleted.

https://community-auth.com/

PHP Code:

$config['sess_driver'] = 'files';
$config['sess_cookie_name'] = 'abcsession';
$config['sess_expiration'] = 86400;
$config['sess_save_path'] = NULL;
$config['sess_match_ip'] = FALSE;
$config['sess_time_to_update'] = 1800;
$config['sess_regenerate_destroy'] = FALSE;

$config['cookie_prefix'] = '';
$config['cookie_domain'] = NULL;
$config['cookie_path'] = '/';
$config['cookie_secure'] = FALSE;
$config['cookie_httponly'] = TRUE;