set('host', '127.0.0.1') ->set('port', 8728) ->set('pass', 'admin') ->set('user', 'admin'); // Initiate client with config object $client = new Client($config); // Build monitoring query $query = (new Query('/interface/monitor-traffic')) ->equal('interface', 'ether1') ->equal('once'); // Ask for monitoring details $out = $client->query($query)->read(); print_r($out);