note 73752 deleted from function.session-set-save-handler by bobby

Note Submitter: ---- Aspects of this have been posted in various comments but it's helpful to make it clearer. The custom session handler seems to perform actions in these orders: When session_start() is called: open read clean (if cleaning is being done this call) write close When session_destroy() is called after session_start(): open read clean (if cleaning is being done this call) destroy close When session_regenerate_id(1) is called after session_start(): open read clean (if cleaning is being done this call) destroy write close