From Facebook Developer Wiki

Does this really work? I have not gotten it to work and there are more people in the forum http://forum.developers.facebook.com/viewtopic.php?id=5607 that it not working for. I've tested with the simplest FQL-query just to make sure that it not them and as pattern I use .* which my guess would match everything?

This page says that pattern is a regular expression, however the examples suggest that it is in fact a glob. Can someone clarify this?

Answer to the question on whether the pattern is indeed a regular expression: I have confirmed it is a regular expression and not a glob. Here is something close to a regular expression I am using, where it will match any page that contains page1 or page5 or the main landing canvas page (e.g. http://apps.facebook.com/afunapp/) if the app's name is afunapp:

 'pattern' => '(page1|page5|afunapp\\/$)'

.* is a proper regular expression.

Is there a way to get the json return as an assocciative array (Object with Properties) instead of an indexed array?

I can't make any sense out of this wiki article. If someone could just explain how I can use this to avoid getting a full list of fb_sig_users that would be AMAZING.