Force non-www and https

$url        = "{$_SERVER['HTTP_HOST']}{$_SERVER['REQUEST_URI']}";
$novaurl    = str_replace("www.", "", $url);

if (substr($_SERVER['HTTP_HOST'], 0, 4) === 'www.') {
    header('HTTP/1.1 301 Moved Permanently');
    header("Location: https://{$novaurl}");
    exit;
}