I think you could use something like this:

//$subject = $_SERVER['HTTP_HOST'];
$subject = 'simon.pmwiki.com:8080';

if(strpos($subject,':')){
  $domain = explode(":",$subject);
  $domain = $domain[0];
}
else $domain = $subject;

if(strpos($domain,'.')){
  $host = explode('.',$domain);
  $host = $host[0];
}
else $host = $domain;

if($host =='simon'){
  echo "bunch'o'stuff";
}

Not fully tested .

CarlosAB

On 8/20/10, Simon <[email protected]> wrote:
> Has anyone configured their wiki to run on an address such as
>
> *mywiki*.example.com (where example.com is their domain name)
>
> I want to be able to run a farm of PmWikis with URLs such as
>
> example.com
> *mywiki*.example.com
> *yourwiki*.example.com
>
> tia
>
> Simon
>

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