require_once('vendor/autoload.php');

use LacunaPHP\APIClient\Client;

$client = new Client('https://us1.lacunaexpanse.com');

try {
	$result = $client->empire->login([
		'name'     => 'empire-name',
		'password' => 'empire-password',
		'api_key'  => 'anonymous'
	]);
} catch($error) {
	...
}