amazon-web-services - 亚马逊产品广告API错误价格返回

Question

我使用以下代码来获取有关亚马逊产品的信息:

 $id = "B00355GLBY";
 $base_url = "http://ecs.amazonaws.com/onca/xml";
    $params = array(
        'AWSAccessKeyId' => "AWSAccessKey",
        'AssociateTag' => "AssociateTag",
        'Version' => "2011-08-01",
        'Operation' => "ItemLookup",
        'Service' => "AWSECommerceService",
        'Condition' => "All",
        'IdType' => 'ASIN',
        'ResponseGroup' => 'Offers, Images, ItemAttributes',             
        'MerchantId' => 'All',                     
        'ItemId' => $id);

    $params['Timestamp'] = gmdate("Y-m-d\TH:i:s.\\0\\0\\0\\Z", time());

    $url_parts = array();
    foreach(array_keys($params) as $key)
        $url_parts[] = $key . "=" . str_replace('%7E', '~', rawurlencode($params[$key]));
    sort($url_parts);

    $url_string = implode("&", $url_parts);
    $string_to_sign = "GET\necs.amazonaws.com\n/onca/xml\n" . $url_string;

    $signature = hash_hmac("sha256", $string_to_sign, "SECRET_KEY", TRUE);

    $signature = urlencode(base64_encode($signature));

    $url = $base_url . '?' . $url_string . "&Signature=" . $signature;

    $parsed_xml = simplexml_load_file($url);
    $original_price = $parsed_xml->Items->Item->Offers->Offer->OfferListing->Price->FormattedPrice;
    $original_image = $parsed_xml->Items->Item->LargeImage->URL;
    $stock = $parsed_xml->Items->Item->Offers->Offer->OfferListing->AvailabilityAttributes->AvailabilityType;
    $original_product_name = $parsed_xml->Items->Item->ItemAttributes->Title;

我的问题是有时我会得到错误的价格返回。
例如，对于这个 ASIN:B005Y6F4WO，我得到的价格是:0.87 美元
我想收到显示在页面中央的(主要)价格。我怎样才能让它工作？
谢谢。

Answer 1

对于仍然有问题的任何人......检索到的价格是否低于亚马逊本身，那么这些价格似乎是由 API 返回所有卖家的最低价格引起的。您可以尝试检查 Condition=New 而不是 All。

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