ext1 = $ext1; return $this; } public function getExt1() { return $this->ext1; } public function jsonSerialize() { $js = parent::jsonSerialize(); $js['ext1'] = $this->ext1; return $js; } } $request = new QueryTradequeryRequestExt(); // 必填参数 $request->setMerchantNo('822290070111135'); $request->setTermNo('29034705'); $request->setOutTradeNo('23423492423'); $request->setRefundAmount('10000'); $request->setLocationInfo($tradeLocationInfo); // 非必填参数 $request->setRefundReason(''); $request->setOriginOutTradeNo(''); $request->setOriginTradeNo(''); $request->setOriginLogNo(''); $request->setExt1('hello ext 1'); try { $response = $api->relationRefund($request); if ($response->getRespData()) { print_r($response->getRespData()); } else { print_r($response); } echo $response->getCode(); # 响应头信息 print_r($response->getHeaders()); # 响应原文 echo $response->getOriginalText(); } catch (\Lakala\OpenAPISDK\V3\ApiException $e) { echo $e->getMessage(); }