src/Gateways/Wechat/MpGateway.php
public function apply(array $options = [])
    {
        $payRequest = [
            'appId'     => $this->userConfig->get('app_id'),
            'timeStamp' => time() . '',
            'nonceStr'  => $this->createNonceStr(),
            'package'   => 'prepay_id=' . $this->preOrder($options)['prepay_id'],
            'signType'  => 'MD5',
        ];
        $payRequest['paySign'] = $this->getSign($payRequest);
        return $payRequest;
    }
public function apply(array $options = [])
    {
        $payRequest = [
            'appId'     => $this->userConfig->get('app_id'),
            'timeStamp' => time() . '',
            'nonceStr'  => $this->createNonceStr(),
            'package'   => 'prepay_id=' . $this->preOrder($options)['prepay_id'],
            'signType'  => 'MD5',
        ];
        $payRequest['paySign'] = $this->getSign($payRequest);
        return $payRequest;
    }
设置并返回参数
@param array $options
@return array
@throws \Pay\Exceptions\GatewayException