Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
find a track in Amazon's MP3 download store
<?php
// documentation: http://developer.amazonwebservices.com/connect/kbcategory.jspa?categoryID=19
class Amazon {
// Fill these in; the associate tag is optional
private $key = ''; // https://aws-portal.amazon.com/gp/aws/developer/account/index.html?action=access-key
private $secret = ''; // https://aws-portal.amazon.com/gp/aws/developer/account/index.html?action=access-key
private $tag = ''; // https://affiliate-program.amazon.com/
private $host = 'ecs.amazonaws.com';
private $path = '/onca/xml';
function sign($params){
uksort($params, 'strnatcmp');
foreach ($params as $key => &$value)
$value = $key . '=' . rawurlencode($value); // http_build_query uses urlencode rather than rawurlencode
return base64_encode(hash_hmac('sha256', implode("\n", array('GET', $this->host, $this->path, implode('&', $params))), $this->secret, TRUE));
}
function lookup($request) {
$query = implode(' - ', array($request['artist'], $request['album'], $request['track']));
$params = array(
'Service' => 'AWSECommerceService',
'Version' => '2009-10-01',
'Timestamp' => date(DATE_ISO8601),
'AWSAccessKeyId' => $this->key,
'AssociateTag' => $this->tag,
'Operation' => 'ItemSearch',
'SearchIndex' => 'MP3Downloads',
'ResponseGroup' => 'ItemAttributes,Images',
'Keywords' => $query,
);
$params['Signature'] = $this->sign($params);
$xml = simplexml_load_file('http://' . $this->host . $this->path . '?' . http_build_query($params));
if (!is_object($xml) || (string) $xml->Items->Request->IsValid != 'True')
return array();
$items = array();
if (!empty($xml->Items->Item)){
foreach ($xml->Items->Item as $item){
$asin = (string) $item->ASIN;
$attr = $item->ItemAttributes;
$meta = array(
'artist' => (string) $attr->Creator,
'track' => (string) $attr->Title,
'duration' => (string) $attr->RunningTime,
'trackno' => (string) $attr->TrackSequence,
'sample' => 'http://www.amazon.com/gp/dmusic/get_sample_url.html?ASIN=' . $asin,
'info' => (string) $item->DetailPageURL,
);
foreach (array('LargeImage', 'MediumImage', 'SmallImage') as $image){
if (isset($item->{$image})){
$meta['image'] = (string) $item->{$image}->URL;
break;
}
}
$items[] = $meta;
}
}
return $items;
}
}
$api = new Amazon;
$items = $api->lookup(array('artist' => 'Nirvana', 'album' => 'Nevermind', 'track' => 'Smells Like Teen Spirit'));
print_r($items);
/*
Array
(
[0] => Array
(
[artist] => Nirvana
[track] => Smells Like Teen Spirit
[duration] => 301
[trackno] => 1
[sample] => http://www.amazon.com/gp/dmusic/get_sample_url.html?ASIN=B000V639BK
[info] => http://www.amazon.com/Smells-Like-Teen-Spirit/dp/B000V639BK%3FSubscriptionId%3Dexample%26tag%3D3Dexample%26linkCode%3Dxm2%26camp%3D2025%26creative%3D165953%26creativeASIN%3DB000V639BK
[image] => http://ecx.images-amazon.com/images/I/51ntKGgKiDL.jpg
)
[...]
*/
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.