function getJSON($userid, $passwd)
{
$o = new WeiboOAuth($this->_sina_akey, $this->_sina_skey);
$keys = $o->getRequestToken();
$return = $o->getAuthorizeJSON($keys['oauth_token'], false, $userid, $passwd);
if ($return) {
$return = json_decode($return);
$o = new WeiboOAuth($this->_sina_akey, $this->_sina_skey, $keys['oauth_token'], $keys['oauth_token_secret']);
$access_token = $o->getAccessToken($return->oauth_verifier);
return $access_token;
}
}
