//run this page to test code: itunes-store-php.php
<?php   //http://www.apple.com/itunes/affiliates/resources/documentation/itunes-store-web-service-search-api.html
	header('Content-type: text/html; charset=utf-8');
	session_start();
?>iTunes-store-PHP music search<?php
	if ($_REQUEST["song_name"]=="" && $_REQUEST["artist"]==""){
?>
<form method="post" action="itunes-store-php.php"> 
	Track name: <input type="text" id="song_name" name="song_name" />
	<input type="submit" name="submit" id="submit" value="Search" />
</form>
<?php
	}else{?>
	<a href="itunes-store-php.php">New search</a><br />
	<?php }
?>
<?php
	if ($_REQUEST["song_name"]!=null){
		$itunes_url = "http://ax.itunes.apple.com/WebObjects/MZStoreServices.woa/wa/wsSearch?term=". urlencode($_REQUEST["song_name"])."&country=ca&media=music&entity=song&attribute=musicTrackTerm&limit=200";
		$ch = curl_init();
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
		curl_setopt($ch, CURLOPT_URL, $itunes_url );
		$itunes_response = curl_exec($ch);
		curl_close($ch);
		$itunes_obj = utf8_decode($itunes_response);		
		$itunes_results = json_decode($itunes_obj);
		$_SESSION['itunes_results']=$itunes_results;
		$artistlist=array();
		for ($i=0; $i < count($itunes_results->results); $i++){
			if (!in_array("".$itunes_results->results[$i]->artistName."", $artistlist)){
				array_push($artistlist,"".$itunes_results->results[$i]->artistName."");
			}			
		}
	}
	if ($_REQUEST["artist"]!=null){
		$chosenartist=$_REQUEST["artist"];
		
		$itunes_results=$_SESSION['itunes_results'];
		
		for($i=0; $i < count($itunes_results->results); $i++){
			
			if ($itunes_results->results[$i]->artistName == $chosenartist){
				
				$artistName = $itunes_results->results[$i]->artistName;
				$trackUrl = $itunes_results->results[$i]->trackViewUrl;
				$trackName = $itunes_results->results[$i]->trackName;
				$artistName = $itunes_results->results[$i]->artistName;
				$artwork60 = $itunes_results->results[$i]->artworkUrl60;
				$artwork100 = $itunes_results->results[$i]->artworkUrl100;
				$trackPrice = $itunes_results->results[$i]->trackPrice;
				$album = $itunes_results->results[$i]->collectionName;
				$duration = $itunes_results->results[$i]->trackTimeMillis;
				echo "<img src=\"" . $artwork100 . "\" /> " ."<!-- <img src=\"" . $artwork60 . "\" /> --> " . $album . " - " . $artistName . " - " . $trackName . " - $" . $trackPrice . " - " . floor($duration / 60000) . "m:" . floor(($duration / 1000) % 60) . "s <a href=\"". $trackUrl ."\" target=\"_blank\">Purchase</a><br />";
			}
		}
	}
?>
<?php if ($_REQUEST["artist"]=="" && $_REQUEST["song_name"]!=""){ ?>
<form method="post" action="itunes-store-php.php"> 
	Artist name: <select name="artist" id="artist" style="width:300px">
		<?php 
				for($i=0; $i < count($artistlist); $i++){ ?>
		<option value="<?php echo $artistlist[$i]; ?>"><?php echo $artistlist[$i]; ?></option>
		<?php } ?>
	</select>
	<input type="submit" name="submit" id="submit" value="Continue" />
</form>
<?php } ?>