/**
 * @param $ShipperCode 快递公司编号
 * @param $order_sn 运单号
 */
public function getMessage($ShipperCode,$order_sn){
  $requestData= "{'OrderCode':'','ShipperCode':'".$ShipperCode."','LogisticCode':'".$order_sn."'}";
  $datas = array(
    'EBusinessID' => self::EBusinessID,
    'RequestType' => '1002',//接口指令1002，固定
    'RequestData' => urlencode($requestData) ,
    'DataType' => '2', //数据返回格式 2 json
  );
  //把$requestData进行加密处理
  $datas['DataSign'] = $this -> encrypt($requestData, self::AppKey);
  $result = $this -> sendPost( self::ReqURL, $datas);
  return $result;
}

/*
 * 进行加密
 */
function encrypt($data, $appkey) {
  return urlencode(base64_encode(md5($data.$appkey)));
}

<"http://api.kdniao.cc/Ebusiness/EbusinessOrderHandle.aspx";
  /**
   * @param $ShipperCode 快递公司编号
   * @param $order_sn 运单号
   */
  public function getMessage($ShipperCode,$order_sn){
    $requestData= "{'OrderCode':'','ShipperCode':'".$ShipperCode."','LogisticCode':'".$order_sn."'}";
    $datas = array(
      'EBusinessID' => self::EBusinessID,
      'RequestType' => '1002',//接口指令1002，固定
      'RequestData' => urlencode($requestData) ,
      'DataType' => '2', //数据返回格式 2 json
    );
    //把$requestData进行加密处理
    $datas['DataSign'] = $this -> encrypt($requestData, self::AppKey);
    $result = $this -> sendPost( self::ReqURL, $datas);
    return $result;
  }
  /**
   * post提交数据
   * @param string $url 请求Url
   * @param array $datas 提交的数据
   * @return url响应返回的html
   */
  function sendPost($url, $datas) {
    $temps = array();
    foreach ($datas as $key => $value) {
      $temps[] = sprintf('%s=%s', $key, $value);
    }
    $post_data = implode('&', $temps);
    $url_info = parse_url($url);
    if(empty($url_info['port']))
    {
      $url_info['port']=80;
    }
    $httpheader = "POST " . $url_info['path'] . " HTTP/1.0\r\n";
    $httpheader.= "Host:" . $url_info['host'] . "\r\n";
    $httpheader.= "Content-Type:application/x-www-form-urlencoded\r\n";
    $httpheader.= "Content-Length:" . strlen($post_data) . "\r\n";
    $httpheader.= "Connection:close\r\n\r\n";
    $httpheader.= $post_data;
    $fd = fsockopen($url_info['host'], $url_info['port']);
    fwrite($fd, $httpheader);
    $gets = "";
    $headerFlag = true;
    while (!feof($fd)) {
      if (($header = @fgets($fd)) && ($header == "\r\n" || $header == "\n")) {
        break;
      }
    }
    while (!feof($fd)) {
      $gets.= fread($fd, 128);
    }
    fclose($fd);
    return $gets;
  }
  /*
   * 进行加密
   */
  function encrypt($data, $appkey) {
    return urlencode(base64_encode(md5($data.$appkey)));
  }
}
$model = new KuaidiController();
$res = $model -> getMessage('ZTO','12345678');
echo "<pre>";
var_dump($res);