I am having a problem about sessions, or cookies, I didn\'t understand the reason.
I log on to my site with Auth::attempt($userdata, false), which means
Auth::attempt($userdata, false)
It is a desired behavior to be logged in after you re-open the browser. You can change this in app/config/session.php by setting
app/config/session.php
'expire_on_close' => true,