HttpAPI.asp Member Login from PHP

I'm trying to use the HTTPAPI method, because my site is written in PHP.  (documentation here: http://demo.webwizforums.com/HttpAPI.asp#LoginMemberCookie)

I'm able to use the API call fine to get back the response data in my PHP script, and I'm able to parse it into the various components.   However, I can't figure out how to set the cookie in PHP for the forum to recognize it.  PHP doesn't have native support for 'multi-value cookies' or 'cookie collections' that this seems to require, but as PHP is listed as one of the options that this is useful for, then I suspect I'm just missing something.

Any ideas how to use the CookieName, CookieKey, and CookieData to create and set the cookie in PHP for ASP to read it properly?

The 2 closest attempts I feel I've made so far, though neither are working are:

setcookie($cookiename, $cookiekey."=".$cookiedata, time()+7200, "/", ".domain.com");

setcookie($cookiename."[".$cookiekey."]", $cookiedata, time()+7200, "/", ".domain.com");

Any help here?

Thanks

I've just toggled that, and it didn't solve my issue.  

When I use the code on the following page to display cookie values, my cookies that I set in PHP are showing up, but always in the 'single value cookies' list, where I suspect I need to set them so that they will show in in the multi-value list.  (http://www.planet-source-code.com/vb/scripts/ShowCode.asp?lngWId=4&txtCodeId=6539)