Because our PHP Api wrapper was a bit dusty we decided to rewrite it. You can find it now on GitHub. With the new one you can do cool stuff like this:
$api = new Api("your_api_key");
$api->convert([
'inputformat' => 'pdf',
'outputformat' => 'jpg',
'converteroptions' => [
'page_range' => '1-3',
],
'input' => 'upload',
'file' => fopen('./tests/input.pdf', 'r'),
])
->wait()
->downloadAll('./output/');
?>
By the way, an official node-js API wrappper is also in the works!