Get Facebook fan page ID

Question

I\'ve got the Facebook user ID of the user who created a given page. Now I need to get the page ID to display like box in my website.

Different users have their own Face

Answer 1

These answers don't seem to work anymore since the graph now requires an access token for most if not all requests.

Here's a working solution that only requires as input the facebook page URL.

What this does is receives the facebook page as HTML and looks through(via regex) for a JSON entity_id that has a numeric value. This value is the page's ID. This solution is surely not guaranteed to work forever since page content may change

/**
 * @param string $facebookUrl
 * @return null|string
 */
function get_facebook_id($facebookUrl)
{
    $facebookId = null;
    $fbResponse = @file_get_contents($facebookUrl);
    if($fbResponse)
    {
        $matches = array();
        if (preg_match('/"entity_id":"([0-9])+"/', $fbResponse, $matches))
        {
            $jsonObj = json_decode("{" . $matches[0] . "}");
            if($jsonObj)
            {
                $facebookId = $jsonObj['entity_id'];
            }
        }
    }
    return $facebookId;
}

Answer 2

this works using the new php sdk

$page_id = null;
$facebook = new Facebook();
try {
    $signed_request = $facebook->getSignedRequest();
    $page_id = $signed_request['profile_id'];
} catch (FacebookApiException $e) {
    error_log($e);
}

please note that i'm upset that this works, because what i'm actually looking for is the user id of the page creator since I need to display content created by that user on the tab. this used to be possible, but i don't think it is anymore. kasun, how are you getting the id of the page creator?

Answer 3

goto http://www.facebook.com/insights/ after you logged in to your facebook

press the green button on top right ( "insight for your domain") select the drop down value for your page voila, you see the page_id

(I saw this on facebook forum)

Answer 4

$pages = $facebook->api(array(
'method' => 'fql.query',
'query' => 'SELECT page_id FROM page_admin WHERE uid = '.$uid.''
));

$uid being the profile id# of the FB user! Fql query using PHP SDK

Answer 5

The page id is included in the signed request. Here an updated version of byron's post for facebook's page update.

$facebook = new Facebook();

$signed_request = $facebook->getSignedRequest();
$page_id = $signed_request['page']['id'];

echo 'page id is ' . $page_id . ' AAAAAAAAAAWWWWWWW YYYYYYEEEEEEEEAAAAAAAAAAAA!';

Answer 6

Here are list of functions which you can add in facebook sdk. Works for both graph api and rest api.

/*
    Custom functions to get fan page related information
*/
function getSignedData()
{
    if(isset($this->signedData) && !empty($this->signedData))
        return $this->signedData;

    if(!isset($_REQUEST["signed_request"]))
        return false;

    $signed_request = $_REQUEST["signed_request"];

    if(empty($signed_request))
        return false;

    list($encoded_sig, $payload) = explode('.', $signed_request, 2);
    $data = json_decode(base64_decode(strtr($payload, '-_', '+/')), true);

    if(empty($data))
        return false;

    $this->signedData = $data;



    return $data;
}

/*
    Return fan page id, Only return fanpage id for 1st (landing) page of application.
*/
function getFanPageId()
{
    if(!$data = $this->getSignedData())
    {
        return false;
    }
    if(isset($data["page"]["id"]))
        return $data["page"]["id"];

    return false;
}

/*
    Only returns userid, if user has authenticated application
*/
function getFanPageUserId()
{
    if(!$data = $this->getSignedData())
    {
        return false;
    }

    if(isset($data["user_id"]))
    {
        return $data["user_id"];
    }

    return false;
}

/*
Check if visiting user is fan page admin
*/
function checkFanPageAdmin()
{
    if(!$data = $this->getSignedData())
        return false;

    if(isset($data["page"]["admin"]) && $data["page"]["admin"] == 1)
        return true;

    return false;
}