JsApiPay::GetJsApiParameters PHP Method

    public function GetJsApiParameters($UnifiedOrderResult)
    {
        if (!array_key_exists("appid", $UnifiedOrderResult) || !array_key_exists("prepay_id", $UnifiedOrderResult) || $UnifiedOrderResult['prepay_id'] == "") {
            throw new WxPayException("参数错误");
        }
        $jsapi = new WxPayJsApiPay();
        $jsapi->SetAppid($UnifiedOrderResult["appid"]);
        $timeStamp = time();
        $jsapi->SetTimeStamp("{$timeStamp}");
        $jsapi->SetNonceStr(WxPayApi::getNonceStr());
        $jsapi->SetPackage("prepay_id=" . $UnifiedOrderResult['prepay_id']);
        $jsapi->SetSignType("MD5");
        $jsapi->SetPaySign($jsapi->MakeSign());
        $parameters = json_encode($jsapi->GetValues());
        return $parameters;
    }

 static function build_js_params()
 {
     //①、获取用户openid
     $tools = new JsApiPay();
     $openId = $tools->GetOpenid();
     pt_log($openId);
     //②、统一下单
     $input = new WxPayUnifiedOrder();
     $input->SetBody("test");
     $input->SetAttach("test");
     $input->SetOut_trade_no(WxPayConfig::MCHID . date("YmdHis"));
     $input->SetTotal_fee("1");
     $input->SetTime_start(date("YmdHis"));
     $input->SetTime_expire(date("YmdHis", time() + 600));
     $input->SetGoods_tag("test");
     $input->SetNotify_url("http://demo.ptphp.com/wxpay/example/notify_test");
     $input->SetTrade_type("JSAPI");
     $input->SetOpenid($openId);
     $order = WxPayApi::unifiedOrder($input);
     pt_log($order);
     $jsApiParameters = $tools->GetJsApiParameters($order);
     pt_log($jsApiParameters);
     //获取共享收货地址js函数参数
     return $jsApiParameters;
 }