Omnipay\WechatPay\Message\CreateMicroOrderResponse::getOrderData PHP Method

    public function getOrderData()
    {
        if ($this->isSuccessful()) {
            $data = array('app_id' => $this->request->getAppId(), 'mch_id' => $this->request->getMchId(), 'prepay_id' => $this->getPrepayId(), 'package' => 'Sign=WXPay', 'nonce' => md5(uniqid()), 'timestamp' => time());
            $data['sign'] = Helper::sign($data, $this->request->getApiKey());
        } else {
            $data = null;
        }
        return $data;
    }