function sso_signature($arr_params)
{
$_arr_sso = array("act_post" => "signature", "params" => $arr_params);
$_arr_ssoData = array_merge($this->arr_data, $_arr_sso);
//合并数组
$_arr_get = fn_http(BG_SSO_URL . "?mod=signature", $_arr_ssoData, "post");
//提交
return fn_jsonDecode($_arr_get["ret"], "no");
}