$url = 'https://mapi.yuansfer.yunkeguan.com/app-data-search/v3/cancel';
$token = '59600f2a9ad644c6a9570233560cc94e';
'merchantNo' => '200043',
'transactionNo' => '297553565108438359'
ksort($params, SORT_STRING);
foreach ($params as $k => $v) {
$str .= $k . '=' . $v . '&';
$params['verifySign'] = md5($str . md5($token));
echo 'verifySign:', $params['verifySign'];
curl_setopt_array($ch, array(
CURLOPT_RETURNTRANSFER => true,
CURLOPT_POSTFIELDS => http_build_query($params),
$result = curl_exec($ch);
return json_decode($result, true);