@NogDogNov 21.2014 — #If you want to make sure the session cookie, $_SESSION array, and session data are all terminated, see example #1 on the [url=http://php.net/session_destroy]manual page for session_destroy()[/url].
@NogDogNov 22.2014 — #Here's a tip that will both save you time and help you learn: you can find the official documentation of any PHP function by this URL format: