php で isbn解決
$request = "http://ecs.amazonaws.jp/onca/xml?". "Service=AWSECommerceService". "&Version=2011-08-01". "&ResponseGroup=Small,Images". "&Operation=ItemLookup". "&ItemId=".$isbn;
こうだったのが
$request ="http://ecs.amazonaws.jp/onca/xml?Service=AWSECommerceService". "&Version=2011-08-01". "&AssociateTag=PutYourAssociateTagHere". "&Operation=ItemLookup". "&IdType=ISBN". "&SearchIndex=Books". "&ItemId=".$isbn;
こう
http://associates-amazon.s3.amazonaws.com/signed-requests/helper/index.html
がお役立ち