set cookie then redirect to another domain

mulllhausen

i’m not sure if i’m doing something wrong in my code or if my desired action is just not allowed in the standards…i’m trying to set a cookie on my localhost then redirect the user off to another domain. (for some background on why i would want to do this: as part of the oauth 1.0 signin process i want to set the oauth state then redirect the user off to the service provider to signin; but this is not really relevant to my question – it just may be useful in case someone wants to suggest a better way to do what i am trying to do…)

here is a simpified version of the relevant piece of my php code:

setcookie('oauth_state', 'one', time() + 60*60, '/', 'localhost', false, false);
header("Location: http://google.com/");
exit;

i’m testing on firefox 10.0.2 on ubuntu and no cookie at localhost is being set. what am i doing wrong?