class Util {
    static public function urlencode_rfc3986($str) {
        return str_replace('%7E', '~', rawurlencode($str));
    }
}

class BookInfo{
    public $ISBN;
    public $ASIN;
    public $Title;
    public $Author;
    public $Publisher;
    public $PublicationDate;
    public $DetailPageURL;

    /**
     * コンストラクタ
     *
     */
    public function __construct() {
        $this->ISBN = "";
        $this->ASIN = "";
        $this->Title = "";
        $this->Author = "";
        $this->Publisher = "";
        $this->PublicationDate = "";
        $this->DetailPageURL = "";
    }
}

define("AWS_BASE_URL", "http://ecs.amazonaws.jp/onca/xml");
define("AWS_ACCESS_KEY", ご自分のアクセスキーをどーぞ);
define("AWS_SECRET_ACCESS_KEY", ご自分のシークレットアクセスキーをどーぞ);
define("AWS_OPTION_SERVICE", "AWSECommerceService");
define("AWS_OPTION_VERSION", "2011-08-02");
define("AWS_OPTION_ASSOCIATETAG", ご自分のアソシエイトIDをどーぞ);
define("AWS_OPTION_SEARCHINDEX", "Books");
define("AWS_OPTION_BROWSENODE", "466282");
define("AWS_OPTION_RESPONSEGROUP", "Medium");

require_once(dirname(__FILE__) ."/Util.php");
require_once(dirname(__FILE__) ."/BookInfo.php");

$baseurl = AWS_BASE_URL;
$params = array();
$params['Service'] = AWS_OPTION_SERVICE;
$params['AWSAccessKeyId'] = AWS_ACCESS_KEY;
$params['Version'] = AWS_OPTION_VERSION;
$params['AssociateTag'] = AWS_OPTION_ASSOCIATETAG;
$params['SearchIndex'] = AWS_OPTION_SEARCHINDEX;
$params['BrowseNode'] = AWS_OPTION_BROWSENODE;
$params['ResponseGroup'] = AWS_OPTION_RESPONSEGROUP;
$params['Operation'] = 'ItemSearch';
$params['ItemPage'] = 1;
$params['Sort'] = 'salesrank';
$params['Timestamp'] = gmdate('Y-m-d\TH:i:s\Z');
//add
$params['Power'] = 'binding:not kindle';

ksort($params);

$caStr = '';
foreach ($params as $k => $v) {
    $caStr .= '&'.Util::urlencode_rfc3986($k).'='.Util::urlencode_rfc3986($v);
}
$caStr = substr($caStr, 1);

// 署名を作成します
// - 規定の文字列フォーマットを作成
// - HMAC-SHA256 を計算
// - BASE64 エンコード
$parsedUrl = parse_url($baseurl);
$strToSign = "GET\n{$parsedUrl['host']}\n{$parsedUrl['path']}\n{$caStr}";
$signature = base64_encode(hash_hmac('sha256', $strToSign, AWS_SECRET_ACCESS_KEY, true));

// URL を作成します
// - リクエストの末尾に署名を追加
$url = $baseurl.'?'.$caStr.'&Signature='.Util::urlencode_rfc3986($signature);

//XMLで情報を取得。
$xml = @simplexml_load_file($url);

$dataList = array();
//検索結果データ展開
foreach ($xml->Items->Item as $item) {
    $data = new BookInfo();

    $data->ISBN = (string) $item->ItemAttributes->ISBN;
    $data->ASIN = (string) $item->ASIN;
    $data->Title = (string) $item->ItemAttributes->Title;
    $data->Author = (string) $item->ItemAttributes->Author;
    $data->Publisher = (string) $item->ItemAttributes->Publisher;
    $data->PublicationDate = (string) $item->ItemAttributes->PublicationDate;
    $data->DetailPageURL = (string) $item->DetailPageURL;

    $dataList[] = $data;
}

var_dump($dataList);

$params['Power'] = 'binding:not kindle and pubdate:during 12-2013';