Php – Facebook API/PHP – Is it possible to change a user’s profile image via FB Graph API

Simply fetch the data through this URL:

http://graph.facebook.com/userid_here/picture

Replace userid_here with id of the user you want to get the photo of. You can also use HTTPS as well.

You can use the PHP's file_get_contents function to read that URL and process the retrieved data.

Resource:

http://developers.facebook.com/docs/api

Note: In php.ini, you need to make sure that the OpenSSL extension is enabled to use thefile_get_contents function of PHP to read that URL.

I'm so glad I went trough the same problem You have to set the fileUpload param to true !

$facebook = new Facebook(array(
            'appId'  => $facebookapi_id,
            'secret' => $facebookapi_secret,
            'fileUpload' => true,
            'cookie' => true
          ));