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

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;
}