Linux::_hostname PHP Method

    protected function _hostname()
    {
        if (PSI_USE_VHOST === true) {
            $this->sys->setHostname(getenv('SERVER_NAME'));
        } else {
            if (CommonFunctions::rfts('/proc/sys/kernel/hostname', $result, 1)) {
                $result = trim($result);
                $ip = gethostbyname($result);
                if ($ip != $result) {
                    $this->sys->setHostname(gethostbyaddr($ip));
                }
            }
        }
    }