if (!$is_logged) $member_id['user_group'] = 5;

$_UA = $db->safesql($_SERVER['HTTP_USER_AGENT']);
$names_robots = array('Yandex' => 'Robot Yandex',
              'YaDirectBot' => 'Robot YaDirect',
              'YandexSomething' => 'Robot Yandex2',
              'Bond, James Bond' => 'Robot Yandex Spam',
              'Googlebot' => 'Robot Google',
              'Mediapartners-Google' => 'Robot GoogleAd',
              'Googlebot-Image' => 'Robot GoogleIM',
              'StackRambler' => 'Robot Rambler',
              'Slurp' => 'Robot Yahoo',
              'Yahoo! Slurp' => 'Robot Yahoo',
              'MSNBot' => 'Robot Bing',
              'MSNBot-media' => 'Robot BingIM',
              'MSNBot-news' => 'Robot Bing-News',
              'ia_archiver' => 'Robot Alexa',
              'Mail.Ru' => 'Robot Mail',
              'Webalta' => 'Robot Webalta',
              'Turtle' => 'Robot Turtle',
              'Aport' => 'Robot Aport',
              'SAPE.BOT is watching you!' => 'Robot Sape');

foreach($names_robots as $keyR => $valueR)
{
    if(strstr(strtolower($_UA), strtolower($keyR)))
    {
        $robot = $valueR;
    }
}

if (!$is_logged and $robot != '')
{
    $member_id['user_group'] = 7;
}