スタック オーバーフローに関するこの問題に基づいたほとんどのコード サンプルを見てきましたが、まだリクエストを機能させることができません。このエラーが発生し続けます:
<Error><Code>SignatureDoesNotMatch</Code><Message>The request signature we calculated does not match the signature you provided. Check your AWS Secret Access Key and signing method. Consult the service documentation for details.
これが私のコードです:
$access_key = "ACCESS_KEY";
$associateTag = "AOSSOCIATE_TAG";
$secretkey = "SECRET_KEY";
$keywords = "harry%20potter";
$timestamp = gmdate("Y-m-d\TH:i:s\Z");
$operation = "AWSECommerceService";
function createSignature($operation,$timestamp,$secretkey){
$the_string=$operation.$timestamp;
return base64_encode(hash_hmac("sha256",$the_string,$secretkey,true));
}
$signature = createSignature ($operation,$timestamp,$secretkey);
$APIcall =
"http://ecs.amazonaws.com/onca/xml?".
"AWSAccessKeyId=$access_key&".
"AssociateTag=$associateTag&".
"BrowseNode=1000&".
"ItemPage=1&".
"Keywords=$keywords&".
"Operation=ItemSearch&".
"ResponseGroup=Medium&".
"SearchIndex=Books&".
"Service=AWSECommerceService&".
"Timestamp=$timestamp&".
"Version=2011-08-01&".
"Signature=$signature";
$response = simplexml_load_file($APIcall);
誰でも助けることができますか?