PHP实现京东工业平台API接口对接，轻松实现订单退货功能！

<?php

//设置API访问地址和请求参数
$apiUrl = "https://api.jd.com/routerjson";
$appKey = "your_app_key";
$appSecret = "your_app_secret";
$accessToken = "your_access_token";

//设置请求参数
$requestData = array(
    "method" => "jd.open2.returnorder.pop.querylist", //API名称
    "access_token" => $accessToken, //访问令牌
    "app_key" => $appKey, //AppKey
    "timestamp" => date("Y-m-d H:i:s"), //当前时间
);

//生成签名
ksort($requestData);
$signString = "";
foreach ($requestData as $key => $value) {
    $signString .= $key . $value;
}
$signString .= $appSecret;
$requestData["sign"] = strtoupper(md5($signString));

//发起API请求
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $apiUrl);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($requestData));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$result = curl_exec($ch);
curl_close($ch);

//处理API响应结果
$responseData = json_decode($result, true);
if ($responseData["result"] == "success") {
    //退货成功处理逻辑
    //...
} else {
    //退货失败处理逻辑
    //...
}

?>