note 39840 deleted from function.setcookie by tularis

Note Submitter: Luis Hernandez ---- As mentioned in a few other notes, if the client date earlier than the server, then you could find setcookie("name", "value", time()-3600); failing to clear the cookie, because the on the client's side an hour earlier than the server is still in the future. You could just keep increasing the amount you subtract from time(), but it's an ulgy solution. As far as I can tell, people haven't suggested using mktime (the doc mentions it's an option). So, for example, you can instead execute setcookie("name", "value", mktime(12,0,0,1, 1, 1990)); if you assume no user will have their clock set to be before 1990.