如何使用PHP和woocommerce REST API json响应获取订单备注

<?php
// WooCommerce REST API的订单详情接口URL
$url = 'https://your-domain/wp-json/wc/v3/orders/{order_id}';

// 订单ID
$order_id = 123;

// WooCommerce网站的Consumer Key和Consumer Secret
$consumer_key = 'your-consumer-key';
$consumer_secret = 'your-consumer-secret';

// 构建身份验证字符串
$auth_string = base64_encode($consumer_key . ':' . $consumer_secret);

// 设置请求头
$headers = array(
    'Authorization: Basic ' . $auth_string
);

// 发送GET请求
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, str_replace('{order_id}', $order_id, $url));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
$response = curl_exec($ch);
curl_close($ch);

// 解析JSON响应
$order = json_decode($response);

// 获取订单备注
$note = $order->customer_note;

// 打印订单备注
echo '订单备注：' . $note;
?>