Topic awaiting preservation: [php] Extract host out of hostname?

I use the following to print out a log member hostnames

$hostname = gethostbyaddr($_SERVER['REMOTE_ADDR']);

There are a lot of formats for hostnames i'm quite aware of that, however if possible I'd like to trim the hostnames down to just the host...

Couple examples...

0x503ea205.boanxx12.adsl-dhcp.tele.dk = adsl-dhcp.tele.dk
242691hfc100.tampabay.rr.com = tampabay.rr.com

Is it possible to trim that down? I figured there was something with the dots I could use to trim, but are all hostnames the same in regards to that?

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<?php

    $fullhost = gethostbyaddr($_SERVER['REMOTE_ADDR']);

    $host = preg_replace("/^[^.]+\./", "*.", $fullhost);

    echo $host;

?>

__________________

Kriek says '[SYSTEMWIDE_MESSAGE] PHP Meetup'
What we do is never understood; only praised and blamed

though I'm not certain why you would want to do that.
that longish thing is *the* hostname - ie. the machine that asked your webserver. what you're filtering out is, well, an incomplete domain name...

Yeah thats ok though TP but thanks for the input.

Thanks kriek, i'll go give that a go

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