Python转PHP：FedEx追踪API请求体转换深度解析

data = requests.post('https://www.fedex.com/trackingCal/track', data={
    'data': json.dumps({ # 注意这里，'data'的值被json.dumps处理
        'TrackPackagesRequest': {
            # ...
        }
    }),
    'action': 'trackpackages',
    'locale': 'en_US',
    'format': 'json',
    'version': 99
}).json()

<?php
// ...
$headers = ['Content-Type' => 'application/json']; // 错误点之一
$data = ['data' => [ // 这是一个PHP数组
            'TrackPackagesRequest' => [
                // ...
            ]],
    'action' => 'trackpackages',
    'locale' => 'en_US',
    'format' => 'json',
    'version' => 99
    ];

$response = Requests::post($url, $headers, json_encode($data)); // 错误点之二
// ...
?>

<?php

// 引入Composer自动加载文件
$dir = __DIR__;
include $dir .'/vendor/autoload.php';

// 示例追踪号
$tracking_number = '123456789';

// API请求URL
$url = 'https://www.fedex.com/trackingCal/track';

// 清空或不设置Content-Type头，让Requests库默认使用form-urlencoded
$headers = [];

// 构建请求数据
$data = [
    // 关键：只有'data'字段的值被json_encode
    "data" => json_encode([
        "TrackPackagesRequest" => [
            "appType" => "wtrk",
            "uniqueKey" => "",
            "processingParameters" => [
                "anonymousTransaction" => true,
                "clientId" => "WTRK",
                "returnDetailedErrors" => true,
                "returnLocalizedDateTime" => false
            ],
            "trackingInfoList" => [[
                "trackNumberInfo" => [
                    "trackingNumber" => $tracking_number,
                    "trackingQualifier" => "",
                    "trackingCarrier" => ""
                ]
            ]]
        ]

    ]),
    "action" => "trackpackages",
    "locale" => "en_US",
    "format" => "json",
    "version" => 99
];

// 发送POST请求
// Requests::post函数在接收数组作为第三个参数时，默认会将其进行form-urlencoded编码
$response = Requests::post($url, $headers, $data);

// 打印响应结果
print_r($response);

// 解析并使用响应数据（如果成功）
if ($response->success) {
    $responseData = json_decode($response->body, true);
    if (isset($responseData['TrackPackagesResponse']['packageList'][0])) {
        $packageInfo = $responseData['TrackPackagesResponse']['packageList'][0];
        $fedex_status  = $packageInfo['keyStatus'];
        $fedex_details = $packageInfo['statusWithDetails'];
        $delivery_date = $packageInfo['displayActDeliveryDt'];
        $delivery_time = $packageInfo['displayActDeliveryTm'];

        echo "FedEx Status: " . $fedex_status . "\n";
        echo "Details: " . $fedex_details . "\n";
        echo "Delivery Date: " . $delivery_date . "\n";
        echo "Delivery Time: " . $delivery_time . "\n";
    } else {
        echo "Package information not found in response.\n";
    }
} else {
    echo "Request failed: " . $response->status_code . " - " . $response->body . "\n";
}

?>