php - Getting domain name without TLD

Question

I have this code right here:

    // get host name from URL
    preg_match('@^(?:http://)?([^/]+)@i',
    "http://www.joomla.subdomain.php.net/index.html", $matches);
    $host = $matches[1];

    // get last two segments of host name
    preg_match('/[^.]+.[^.]+$/', $host, $matches);
    echo "domain name is: {$matches[0]}
";

The output will be php.net

I need just php without .net

Answer 1

Although regexes are fine here, I'd recommend parse_url

$host = parse_url('http://www.joomla.subdomain.php.net/index.html', PHP_URL_HOST);
$domains = explode('.', $host);
echo $domains[count($domains)-2];

This will work for TLD's like .com, .org, .net, etc. but not for .co.uk or .com.mx. You'd need some more logic (most likely an array of tld's) to parse those out .