前面的文章也有讲解，内容太多不方便精确阅读，特意提前关键部分，供大家参考。

方法调用的代码实现

//电商ID
defined(‘EBusinessID‘) or define(‘EBusinessID‘, ‘请到快递鸟官网申请http://kdniao.com/reg‘);
//电商加密私钥，快递鸟提供，注意保管，不要泄漏
defined(‘AppKey‘) or define(‘AppKey‘, ‘请到快递鸟官网申请http://kdniao.com/reg‘);
//请求url
defined(‘ReqURL‘) or define(‘ReqURL‘, ‘http://api.kdniao.com/Ebusiness/EbusinessOrderHandle.aspx‘);

//调用查询物流轨迹
//---------------------------------------------

$logisticResult=getOrderTracesByJson();
echo logisticResult;

Php封装的方法

//---------------------------------------------

/**
 * Json方式 查询订单物流轨迹
 */
function getOrderTracesByJson(){
    $requestData= "{‘OrderCode‘:‘‘,‘ShipperCode‘:‘YTO‘,‘LogisticCode‘:‘12345678‘}";

    $datas = array(
        ‘EBusinessID‘ => EBusinessID,
        ‘RequestType‘ => ‘1002‘,
        ‘RequestData‘ => urlencode($requestData) ,
        ‘DataType‘ => ‘2‘,
    );
    $datas[‘DataSign‘] = encrypt($requestData, AppKey);
    $result=sendPost(ReqURL, $datas);    

    //根据公司业务处理返回的信息......

    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;
}

/**
 * 电商Sign签名生成
 * @param data 内容   
 * @param appkey Appkey
 * @return DataSign签名
 */
function encrypt($data, $appkey) {
    return urlencode(base64_encode(md5($data，$appkey)));
}

php 实现快递鸟API接口 快递查询对接签名验证