private function parseOutputFile($xmlFile)
{
$xml = simplexml_load_file($xmlFile);
$hosts = array();
foreach ($xml->host as $host) {
$hosts[] = new Host((string) $host->address->attributes()->addr, (string) $host->status->attributes()->state, isset($host->hostnames) ? $this->parseHostnames($host->hostnames->hostname) : array(), isset($host->ports) ? $this->parsePorts($host->ports->port) : array());
}
return $hosts;
}