private function _getPostSignOutput($hookPosition)
 {
     $res = array();
     if ($hookPosition == Appbyme::$config['mobile_sign_position_mobile']) {
         global $postlist;
         foreach ($postlist as $post) {
             $res[] = Appbyme::getPostSign('mobile_sign_post_mobile', 'viewthread_post', $post['status']);
         }
     }
     return $res;
 }