This is what I got so far and the returned result is empty
$params = array(
"method"=>"admin.setRestrictionInfo",
"restriction_str"=>"{'age':'21+'}"
);
$this->fb->api($params)
According to this page http://wiki.developers.facebook.com/index.php/Session_Secret_and_API_Methods
I need to pass the Application Secret along with this type of API call, but I can't figure it out how to do it with PHP SDK.
Any inputs, directions would be appreciate as well
Cheers