PHP与Python网络请求转换：FedEx包裹追踪API的正确姿势

data = requests.post('https://www.fedex.com/trackingCal/track', data={
    'data': json.dumps({ # 注意这里，'data'字段的值是一个JSON字符串
        'TrackPackagesRequest': {
            # ... 追踪信息 ...
        }
    }),
    'action': 'trackpackages',
    'locale': 'en_US',
    'format': 'json',
    'version': 99
}).json()

<?php
// ... 引入autoload.php ...

$tracking_number = '123456789';
$url = 'https://www.fedex.com/trackingCal/track';
$headers = ['Content-Type' => 'application/json']; // 错误的头部设置

$requestData = [ // 整个请求体被构建为一个PHP数组
    'data' => [ // 这里的'data'字段值仍然是PHP数组
        '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
];

// 整个requestData数组被json_encode，并作为请求体发送
$response = Requests::post($url, $headers, json_encode($requestData)); 

print_r($response);

{
    "CALError": {
        "code":"UNSUPPORTED.ACTION",
        "message":" is not a supported action",
        "rootCause":null
    }
}

<?php

$dir = __DIR__;
include $dir .'/vendor/autoload.php'; // 确保Composer autoload已配置

$tracking_number = '123456789'; // 替换为实际的追踪号码

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

// 不需要设置Content-Type: application/json 头，因为我们发送的是form-urlencoded数据
$headers = []; 

$data = [
    // 关键：只有'data'字段的值需要被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
];

// Requests::post 方法会默认将$data数组编码为application/x-www-form-urlencoded
$response = Requests::post($url, $headers, $data);

// 检查响应状态码
if ($response->status_code === 200) {
    // 解析JSON响应
    $responseData = json_decode($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 状态: " . $fedex_status . PHP_EOL;
        echo "详细信息: " . $fedex_details . PHP_EOL;
        echo "预计/实际投递日期: " . $delivery_date . PHP_EOL;
        echo "预计/实际投递时间: " . $delivery_time . PHP_EOL;
    } else {
        echo "未找到包裹信息或响应结构不符。" . PHP_EOL;
    }
} else {
    echo "请求失败，HTTP状态码: " . $response->status_code . PHP_EOL;
    echo "响应体: " . $response->body . PHP_EOL;
}

$responseData = json_decode($response->body, true); // true表示返回关联数组

// 提取所需信息
$fedex_status  = $responseData['TrackPackagesResponse']['packageList'][0]['keyStatus'];
$fedex_details = $responseData['TrackPackagesResponse']['packageList'][0]['statusWithDetails'];
$delivery_date = $responseData['TrackPackagesResponse']['packageList'][0]['displayActDeliveryDt'];
$delivery_time = $responseData['TrackPackagesResponse']['packageList'][0]['displayActDeliveryTm'];