Artray

All API requests MUST include a valid User-Agent header. Requests with no User-Agent header will be rejected.

<?
$context = stream_context_create([
  'http' => [
     'header' => 'User-Agent: Awesome-Octocat-App'
   ]
]);

$url = 'https://api.github.com/repos/modxcms/revolution/tags';
$json = file_get_contents($url, false, $context);

$releases = json_decode($json, true);

echo '<pre>';
var_dump($releases);
echo '</pre>';