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Consolidate Amazon Api

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#1 anilm



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Posted 06 December 2013 - 02:07 AM

Hello. I'm not sure if I'm in the correct forum, but here is the problem.


I have registered with Amazon for their API's in all European countries. On my website, I want to consolidate and output the results from these countries when a search has been performed.


At the moment I have this, for just 1 country (I've omitted irrelevant stuff), but would there be a php script to help accomplish what I want, and also to print out which amazon website the result came from...i.e. amazon.co.uk, amazon.es, amazon.de....?




 $amazonAWSAccessKeyId = "aaa";
 $amazonSecretAccessKey = "bbb";
 $amazonAssociateTag = "ccc";
 function amazonSign($url,$secretAccessKey)
   // 0. Append Timestamp parameter
   $url .= "&Timestamp=".gmdate("Y-m-d\TH:i:s\Z");
   // 1a. Sort the UTF-8 query string components by parameter name
   $urlParts = parse_url($url);
   // 1b. URL encode the parameter name and values
   $encodedVars = array();
   foreach($queryVars as $key => $value)
     $encodedVars[amazonEncode($key)] = amazonEncode($value);
   // 1c. 1d. Reconstruct encoded query
   $encodedQueryVars = array();
   foreach($encodedVars as $key => $value)
     $encodedQueryVars[] = $key."=".$value;
   $encodedQuery = implode("&",$encodedQueryVars);
   // 2. Create the string to sign
   $stringToSign  = "GET";
   $stringToSign .= "\n".strtolower($urlParts["host"]);
   $stringToSign .= "\n".$urlParts["path"];
   $stringToSign .= "\n".$encodedQuery;
   // 3. Calculate an RFC 2104-compliant HMAC with the string you just created,
   //    your Secret Access Key as the key, and SHA256 as the hash algorithm.
   if (function_exists("hash_hmac"))
     $hmac = hash_hmac("sha256",$stringToSign,$secretAccessKey,TRUE);
     $hmac = mhash(MHASH_SHA256,$stringToSign,$secretAccessKey);
     die("No hash function available!");
   // 4. Convert the resulting value to base64
   $hmacBase64 = base64_encode($hmac);
   // 5. Use the resulting value as the value of the Signature request parameter
   // (URL encoded as per step 1b)
   $url .= "&Signature=".amazonEncode($hmacBase64);
   return $url;
 // $q is set by both search.php and products.php
 if ($q)
   // construct Amazon Web Services REST Query URL
   $url .= "&Version=2009-03-01";
   $url .= "&Operation=ItemSearch";
   $url .= "&AWSAccessKeyId=".$amazonAWSAccessKeyId;
   $url .= "&AssociateTag=".$amazonAssociateTag;
   $url .= "&ResponseGroup=Medium";
   // sign
   $url = amazonSign($url,$amazonSecretAccessKey);
   $xml = file_get_contents($url);

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