PHP实现京东工业平台API接口对接，轻松实现物流跟踪功能！

<?php
// 京东工业平台API请求地址
$url = "https://api.jd.com/routerjson";
// 开发者账号和密钥
$appKey = "your_app_key";
$appSecret = "your_app_secret";
// 构造API请求参数
$param = array(
    "method" => "jd.logistics.trace.search",
    "app_key" => $appKey,
    "timestamp" => date("Y-m-d H:i:s"),
    "format" => "json",
    "v" => "2.0",
    "sign_method" => "md5",
    "param_json" => json_encode(array(
        "waybillCode" => "your_waybill_code"
    ))
);
// 生成API签名
$signStr = "";
ksort($param);
foreach ($param as $key => $value) {
    $signStr .= $key . $value;
}
$signStr .= $appSecret;
$param["sign"] = strtoupper(md5($signStr));
// 发起API请求
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($param));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$result = curl_exec($ch);
curl_close($ch);
// 处理API响应结果
$result = json_decode($result, true);
if ($result["code"] == "0") {
    // 请求成功
    $traces = $result["result"]["traces"];
    foreach ($traces as $trace) {
        echo $trace["time"] . " " . $trace["remark"] . "<br/>";
    }
} else {
    // 请求失败
    echo "Error: " . $result["msg"];
}
?>