help with extracting part of a string

[gremin]

Hi There,

I have a string. Its acually a web host name (eg. www.example.com)... this can be any valid host name (e.g zap.example-domain.com, www2.examplebla.tv, www.number.2.com etc...).

What i would like to achieve is to try and extract the domain name, minus the .TDL... so in the case of www.example.com, i would get example, and in the case of www.host.example3.co.uk, i would get example3.

What im trying todo is to automactially generate a mysql username for a host, that in MOST cases will be unique.

Any ideas on doing the above or another way to achieve the desired result would be greatly appeciated.

Thanks, SImon

[Installer]

The "co" 2ld, and others like it, throw a wrench into the works. But this function should work if you fill "$co_arr" with them.

function get_plain_name($url)
{
    $co_arr = array('co');
    if (strpos('://', $url) === false) {
        $prot = 'http://';
    } else {
        $prot = '';
    }
    $url_arr = parse_url($prot . $url);
    $host_arr = explode('.', $url_arr['host']);
    $ct = count($host_arr);
    if (($ct > 2) && in_array($host_arr[$ct - 2], $co_arr)) {
        $name = $host_arr[$ct - 3];
    } else {
        $name = $host_arr[$ct - 2];
    }
    return $name;
}

The problem has been addressed before, so there may be better solutions out there.