//測試號相關信息
$mdKey = 'fcAmtnx7MwismjWNhNKdHC44mNXtnEQeJkRrhKJwyrW2ysRR';
$mid = '898340149000005';
$tid = '88880001';
$time = time();
$requestTimestamp = date('Y-m-d H:i:s',$time);
$merOrderId = date('YmdHis') . mt_rand(100000, 999999);
$msgType = 'qmf.jspay';//微信支付：WXPay.jsPay，支付寶支付：trade.jsPay，銀聯(lián)支付：qmf.jspay(qmf.webPay)
$data = [
  'instMid' => 'YUEDANDEFAULT',//業(yè)務類型
  'merOrderId' => $merOrderId,//訂單號
  'mid' => $mid,//商戶號
  'msgSrc' => 'WWW.TEST.COM',//消息來源
  'msgType' => $msgType,//消息類型
  'orderDesc' => '測試',//訂單描述
  'requestTimestamp' => $requestTimestamp,//報文請求時間
  'tid' => $tid,//終端號
  'totalAmount' => '1',//支付金額
  'notifyUrl' => 'http://d9vhs4.natappfree.cc',//支付結(jié)果通知地址，結(jié)果頁面會將返回參數(shù)通過post傳過來。通過status值來判斷是否支付成功
  'returnUrl' => 'http://d9vhs4.natappfree.cc',//網(wǎng)頁跳轉(zhuǎn)地址，結(jié)果頁面會將返回參數(shù)通過get傳過來。通過status值來判斷是否支付成功
];
ksort($data);
reset($data);
$options = '';
foreach ($data as $key => $value) {
  $options .= $key . '=' . $value .'&';
}
$options = rtrim($options, '&');
//存在轉(zhuǎn)義字符，那么去掉轉(zhuǎn)義
if(get_magic_quotes_gpc()){
  $options = stripslashes($options);
}
$sign = md5($options . $mdKey);
$options .= '&sign=' . $sign;
$url = 'https://qr-test2.chinaums.com/netpay-portal/webpay/pay.do?'.$options;
//獲取到url之后直接跳轉(zhuǎn)即可

//測試號相關信息
$mdKey = 'fcAmtnx7MwismjWNhNKdHC44mNXtnEQeJkRrhKJwyrW2ysRR';
$mid = '898340149000005';
$tid = '88880001';
$requestTimestamp = date('Y-m-d H:i:s',time());
$data = [
  'msgSrc' => 'WWW.TEST.COM',//消息來源
  'msgType' => 'refund',//消息類型
  'requestTimestamp' => $requestTimestamp,//報文請求時間
  'merOrderId' => $merOrderId,//訂單號
  'instMid' => $params['instMid'],//業(yè)務類型
  'mid' => $mid,//商戶號
  'tid' => $tid,//終端號
  'refundAmount' => 1,//退款金額
  'refundDesc' => '測試',//退款說明
];
ksort($data);
reset($data);
$options = '';
foreach ($data as $key => $value) {
  $options .= $key . '=' . $value .'&';
}
$options = rtrim($options, '&');
//存在轉(zhuǎn)義字符，那么去掉轉(zhuǎn)義
if(get_magic_quotes_gpc()){
  $options = stripslashes($options);
}
//簽名
$sign = md5($options . $mdKey);
$data['sign'] = $sign;
$client = new Client();
$response = $client->createRequest()
  ->setMethod('POST')
  ->setUrl('https://qr-test2.chinaums.com/netpay-route-server/api/')
  ->setData($data)
  ->setHeaders([
    'Content-Type'=>'application/json'
  ])
  ->setFormat(Client::FORMAT_JSON) //提交的數(shù)據(jù)的格式
  ->send();
if ($response->isOk) {
  $data = $response->data;
  if ($data['refundStatus'] == 'SUCCESS') {
    //退款成功
    return true;
  }
}
return false;
}