FB Graph API发布到我的一个页面的墙上

我不明白FB的API是否非常愚蠢，或者我的API感知不适合这个。我的目标很简单。我有一个内容管理系统。当我从CMS的管理页面创建新闻时，我也想将其发布到我的Facebook页面。这个 API 激怒了我！这是我的代码;

$s = FacebookSession::setDefaultApplication('appid', 'secret'); 
$session = FacebookSession::newAppSession();
// when I use belowed two line, I'm getting error
//$request = new FacebookRequest($session, 'GET', '/me'); 
//$pageList = $request->execute()->getGraphObject()->asArray(); 
$session = new FacebookSession('I don't know what to write here? I have a session already? When I use the access token which taken from api explorer page, due to it's life is short, I'm getting also error.'); 
$page_post=(new FacebookRequest( $session, 'POST','/<my_page_id_not_my_profile_id>/feed', array(
                    'access_token' => 'die!!! one more token! what is this!',
                    'link' => 'link',
                    'message' => 'message', ) ))->execute()->getGraphObject()->asArray();

注意：我不希望弹出窗口登录或任何其他方法。我只想要一个无辜的 API 像推特一样甜蜜地使用......