find and play a track by command line

spotify.php

#!/usr/bin/php
<? // just ./spotify.php 

$api = array(
	'context' => stream_context_create(array('http'=>array('method'=>'GET'))),
	'ns'      => 'spotify',
	'url'     => 'http://ws.spotify.com/search/1/track.json?q=',
);

fwrite(STDOUT, 'Pick a song: ');	

$track = json_decode(
	file_get_contents($api['url'] .
	implode('%20', explode(' ', trim(fgets(STDIN)))),
	false, $api['context']))->tracks[0];

$music = array(
	'name'   => $track->name,
	'artist' => $track->artists[0]->name,
	'url'    => $track->href,
);

if (substr($music['url'], 0, strlen($api['ns'])) === $api['ns']) {
	fwrite(STDOUT, "Now playing: ". $music['name'] ." by ". $music['artist'] ."\n\n");	
	exec('spotify '. $music['url']);
} else {
	fwrite(STDOUT, "No track found...\n\n");	
}