$AssociateTag = '[Your - AssociateTag]';
$AccessKeyId = [Your - AccessKeyId];
$SecretAccessKey = '[Your - SecretAccessKey]';

$endPoint = 'webservices.amazon.com';
$requestUrl = '/onca/xml';
$requestMethod = 'GET';


$params["Service"] = "AWSECommerceService";
$params['AssociateTag'] = $AssociateTag;
$params['Operation'] = 'ItemLookup';
$params['ItemId'] = 'B001AS696K';
$params['ResponseGroup'] = 'Large';
$params["AWSAccessKeyId"] = $AccessKeyId;
$params["Timestamp"] = gmdate("Y-m-d\TH:i:s\Z");
$params["Version"] = "2011-08-01";

ksort($params);

$canonicalQS = array();
foreach ($params as $param=>$value){
$param = str_replace("%7E", "~", rawurlencode($param));
$value = str_replace("%7E", "~", rawurlencode($value));
$canonicalQS[] = $param."=".$value;
}

$canonicalQS = implode("&", $canonicalQS);

$SignatureText = $requestMethod."\n".$endPoint."\n".$requestUrl."\n".$canonicalQS;
$Signature = base64_encode(hash_hmac("sha256", $SignatureText, $SecretAccessKey, true));

$callURL = 'http://'.$endPoint.$requestUrl.'?'.$canonicalQS.'&Signature='.$Signature;

$response = @file_get_contents($callURL);
$responseXML = simplexml_load_string($response);

print_r($responseXML);




http://s3.amazonaws.com/awsdocs/Associates/2011-08-01/prod-adv-api-dg-2011-08-01.pdf
자세한 부분은 위 문서 참고.


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