PHP Amazon API 開発: 商品の分類とタグの処理方法

<?php
$access_key = "YOUR_ACCESS_KEY";
$secret_key = "YOUR_SECRET_KEY";
$associate_tag = "YOUR_ASSOCIATE_TAG";

$base_url = "http://webservices.amazon.com/onca/xml";

$params = array(
    "Service" => "AWSECommerceService",
    "Operation" => "BrowseNodeLookup",
    "BrowseNodeId" => "0", // 根菜单分类
    "ResponseGroup" => "BrowseNodes",
    "AssociateTag" => $associate_tag,
    "AWSAccessKeyId" => $access_key,
);

$canonical_query_string = http_build_query($params);

$signature = base64_encode(hash_hmac("sha256", "GET
webservices.amazon.com
/onca/xml
" . $canonical_query_string, $secret_key, true));

$request_url = $base_url . "?" . $canonical_query_string . "&Signature=" . urlencode($signature);

// 发送HTTP请求并获取响应
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $request_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);

// 解析响应XML并提取商品分类信息
$xml = simplexml_load_string($response);
$browse_nodes = $xml->xpath('//BrowseNode');

foreach ($browse_nodes as $browse_node) {
    $node_id = (string)$browse_node->BrowseNodeId;
    $name = (string)$browse_node->Name;
    // 打印分类信息
    echo "分类ID: " . $node_id . ", 分类名称: " . $name . "
";
}
?>

<?php
$access_key = "YOUR_ACCESS_KEY";
$secret_key = "YOUR_SECRET_KEY";
$associate_tag = "YOUR_ASSOCIATE_TAG";

$base_url = "http://webservices.amazon.com/onca/xml";

$params = array(
    "Service" => "AWSECommerceService",
    "Operation" => "ItemLookup",
    "ItemId" => "B00EOE0WKQ", // 商品ASIN码
    "ResponseGroup" => "ItemAttributes",
    "AssociateTag" => $associate_tag,
    "AWSAccessKeyId" => $access_key,
);

$canonical_query_string = http_build_query($params);

$signature = base64_encode(hash_hmac("sha256", "GET
webservices.amazon.com
/onca/xml
" . $canonical_query_string, $secret_key, true));

$request_url = $base_url . "?" . $canonical_query_string . "&Signature=" . urlencode($signature);

// 发送HTTP请求并获取响应
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $request_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);

// 解析响应XML并提取商品标签信息
$xml = simplexml_load_string($response);
$tags = $xml->xpath('//ItemAttributes/Feature');

foreach ($tags as $tag) {
    // 打印商品标签
    echo "标签: " . (string)$tag . "
";
}
?>