public static function getLocalIp() {        $preg = "/\A((([0-9]?[0-9])|(1[0-9]{2})|(2[0-4][0-9])|(25[0-5]))\.){3}(([0-9]?[0-9])|(1[0-9]{2})|(2[0-4][0-9])|(25[0-5]))\Z/";        exec("ifconfig", $out, $stats);        if (!empty($out)) {            if (isset($out[1]) && strstr($out[1], 'addr:')) {                $tmpArray = explode(":", $out[1]);                $tmpIp = explode(" ", $tmpArray[1]);                if (preg_match($preg, trim($tmpIp[0]))) {                    return trim($tmpIp[0]);                }            }        }        return '127.0.0.1';    }