微信支付-退款结果通知 req_info解密
【方法一】 助手类
class WxpayRefundNotifyHelper
{
private $app_key;
public function __construct($app_key)
{
$this->app_key = $app_key;
}
public function decryptMessage($message)
{
if (empty($this->app_key) || empty($message)) {
return null;
……