Why can't I add an event as a page? - php

Question

I'm trying to add an event to a page in the name of the page. I'm the admin of the page and I found a lot of stuff to the topic, but, no matter what I do, it ends in the PHP Exception:
Uncaught Exception: You must be an admin of the specified page to perform the requested action.
I can add events with my app in my own profile. So, I think the problem is the Access Token. I tried several ways, but to me the best way seems to be:
Open the Graph API Explorer
Select my Application
Request a new access code with permissions manage_pages, publish_actions, publish_stream, create_event
Request /me/accounts
Get the access_token from the page I want to post to and use it in my script
My test script, that works in my own profile:
require 'src/facebook.php';
$facebook = new Facebook(array(
'appId' => $APPLICATION_ID,
'secret' => $APPLICATION_SECRET,
'cookie' => false,
'fileUpload' => true
));
$event_id = 0;
$event_name = "New Event API Test Event";
$event_start = '2013-12-04';
$event_privacy = "OPEN";
$ret_obj = $facebook->api('/'.$page_id.'/events?access_token='.$access_token, 'POST',
array(
'name' => $event_name,
'start_time' => $event_start,
'privacy_type' => $event_privacy,
'location_id' => $location_id
));
if(isset($ret_obj['id'])) {
echo 'Event with added. ID: ' . $ret_obj['id'];
} else {
echo 'Couldn\'t create event';
}
What I did wrong?

Answer 1

You need a page access token.
Page Access Token – These access tokens are similar to user access
tokens, except that they provide permission to APIs that read, write
or modify the data belonging to a Facebook Page. To obtain a page
access token you need to start by obtaining a user access token and
asking for the manage_pages permission. Once you have the user access
token you then get the page access token via the Graph API.
Doc: https://developers.facebook.com/docs/facebook-login/access-tokens/
Then use GET /me/accounts to get the access token associated to your page.

Answer 2

I found the solution in How to programmatically add an event to a page using Graph API?. I had to add the access_token direct into the event array and everything works as expected:
$ret_obj = $facebook->api('/'.$page_id.'/events', 'POST',
array(
'access_token' => $access_token,
'name' => $event_name,
'start_time' => $event_start,
'privacy_type' => $event_privacy,
'location_id' => $location_id
));
Thanks for the help!