function reply($sid, $text, $cid, $without_mention = 0, $comment_ori = 0)
{
$this->id_format($sid);
$this->id_format($cid);
$params = array();
$params['id'] = $sid;
$params['comment'] = $text;
$params['cid'] = $cid;
$params['without_mention'] = $without_mention;
$params['comment_ori'] = $comment_ori;
return $this->oauth->post('comments/reply', $params);
}