我正在尝试将 Amazon Product API 集成到我的网站中,并遇到了几篇帮助我构建 URL 的帖子。唯一的问题是当我执行下面的代码时出现以下错误。难道我做错了什么?
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$AWS_ACCESS_KEY_ID = "[myaccesskeyhere]";
$AWS_SECRET_ACCESS_KEY = "[mysecretkeyhere]";
$base_url = "http://ecs.amazonaws.com/onca/xml?";
$url_params = array('Operation'=>"ItemSearch",'Service'=>"AWSECommerceService",
'AWSAccessKeyId'=>$AWS_ACCESS_KEY_ID,'AssociateTag'=>"yourtag-10",
'Version'=>"2006-09-11",'Availability'=>"Available",'Condition'=>"All",
'ItemPage'=>"1",'ResponseGroup'=>"Images,ItemAttributes,EditorialReview",
'Keywords'=>"Amazon");
// Add the Timestamp
$url_params['Timestamp'] = gmdate("Y-m-d\TH:i:s.\\0\\0\\0\\Z", time());
// Sort the URL parameters
$url_parts = array();
foreach(array_keys($url_params) as $key)
$url_parts[] = $key."=".$url_params[$key];
sort($url_parts);
// Construct the string to sign
$string_to_sign = "GET\necs.amazonaws.com\n/onca/xml\n".implode("&",$url_parts);
$string_to_sign = str_replace('+','%20',$string_to_sign);
$string_to_sign = str_replace(':','%3A',$string_to_sign);
$string_to_sign = str_replace(';',urlencode(';'),$string_to_sign);
// Sign the request
$signature = hash_hmac("sha256",$string_to_sign,$AWS_SECRET_ACCESS_KEY,TRUE);
// Base64 encode the signature and make it URL safe
$signature = base64_encode($signature);
$signature = str_replace('+','%2B',$signature);
$signature = str_replace('=','%3D',$signature);
$url_string = implode("&",$url_parts);
$url = $base_url.$url_string."&Signature=".$signature;
print $url;
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 15);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
$xml_response = curl_exec($ch);
echo $xml_response;
编辑
上面的代码现在可以工作了......我错过了一个“?” 在基本 URL 之后