facebook api: count attendees for event (limit problem) - php

Question

Okay normally I'm all fine about the facebook API but I'm having a problem which just keeps me wondering. (I think it's a bug (Check ticket http://bugs.developers.facebook.net/show_bug.cgi?id=13694) but I wanted to throw it here if somebody has an idea).
I'm usng the facebook PHP library to count all attendees for a specific event
$attending = $facebook->api('/'.$fbparams['eventId'].'/attending');
this works without a problem it correctly returns an array with all attendees...
now heres the problem:
This event has about 18.000 attendees right now.
The api call returns a max number of 992 attendees (and not 18000 as it should).
I tried
$attending = $facebook->api('/'.$fbparams['eventId'].'/attending?limit=20000');
for testing but it doesn't change anything.
So my actual question is:
If I can't get it to work by using the graph api what would be a good alternative? (Parsing the html of the event page maybe?) Right now I'm changing the value by hand every few hours which is tedious and unnecessary.

Answer 1

Actually there are two parameters, limit and offset. I think that you will have to play with both and continue making calls until one returns less than the max. limit.
Something like this, but in a recursive approach (I'm writting pseudo-code):
offset = 0;
maxLimit = 992;
totalAttendees = count(result)
if (totalAttendees >= maxLimit)
{
// do your stuff with each attendee
offset += totalAttendees;
// make a new call with the updated offset
// and check again
}

Answer 2

I've searched a lot and this is how I fixed it:
The requested URL should look something like this.
Here is where you can test it and here is the code I used:
function events_get_facebook_data($event_id) {
if (!$event_id) {
return false;
}
$token = klicango_friends_facebook_token();
if ($token) {
$parameters['access_token'] = $token;
$parameters['fields']= 'attending_count,invited_count';
$graph_url = url('https://graph.facebook.com/v2.2/' . $event_id , array('absolute' => TRUE, 'query' => $parameters));
$graph_result = drupal_http_request($graph_url, array(), 'GET');
if(is_object($graph_result) && !empty($graph_result->data)) {
$data = json_decode($graph_result->data);
$going = $data->attending_count;
$invited = $data->invited_count;
return array('going' => $going, 'invited' => $invited);
}
return false;
}
return false;
}

Answer 3

Try
SELECT eid , attending_count, unsure_count,all_members_count FROM event WHERE eid ="event"