php支付宝、微信支付回调验签

   /**
     * 支付宝  微信支付回调验签
     * @param string $params    回调参数
     * @param string $pkg       包名用来获取配置
     * @return bool|mixed
     */
    public static function verify($params = '',$pkg = 'com.wangduoduo.piece')
    {
        //获取配置
        $config = SpiderBase::load_config($pkg);
        //根据解码参数区别微信或支付宝
        $data = self::xmlToArray($params);
        if ($data) {
            //微信回调
            if ($data['return_code'] == "SUCCESS" && $data['result_code'] == "SUCCESS") {
                $xmlsign = $data['sign'];
                unset($data['sign'],$data['pay_type'],$data['pkg']);//这个是自定义回调时设置的参数,注意验签时要干掉   sign也要干掉
                $sign = http_build_query($data);
                $sign = strtoupper(md5($sign.'&key='.$config['wxPay']['key']));//签名
                if ($sign == $xmlsign) {//验证
                    $data['pay_type'] = 1;
                    return $data;
                }else{
                    return false;
                }
            }
        }else{
            //支付宝回调
            parse_str($params,$data);//将支付宝回调参数转为array
            unset($data['pay_type'],$data['pkg']);//这个是自定义回调时设置的参数,注意验签时要干掉    sign会在支付宝官方类库中过滤
            $aop = new AopClient();
            $aop->alipayrsaPublicKey = $config['alipay']['alipayrsaPublicKey'];//注意此处为商户公钥不是应用公钥,要区别开
            $res = $aop->rsaCheckV1($data,'','RSA2');//官方验签方法
            if ($res) {
                $data['pay_type'] = 2;
                return $data;
            }else{
                return false;
            }
        }
    }