Logout Message displayed from cache!

[Anon]

i create a logout script which deletes the cookie which keeps the user logged in.

<?php

setcookie("username", "brian");
print ("Cookie Sent!");
?>

but when the logout script is run,

<?php

setcookie("username", "", time()-60);
print ("Your logged out!");
?>

"Youre logged out is displayed from the cache and the cookie-delete code isn't executed causing the user to remain logged in!

any help appreciated!

[Anon]

i never get it why we need time()-60 to expire the cookie. i saw it in the book sample and php.net sample.

first cookie was set as "brian", when log off, cookie is set to "", but why do we need to expire the cookie when we set it to ""?

if you don't put the time()-60, your log off should still work, right? it might get off the cache thing.