How to get visitor host name?

[brett]

I can get the IP address of a visitor on my site by

$_SERVER['REMOTE_ADDR'];

how do I get the corresponding URL. If the user is on Comcast, the URL
(host name) may look like:

d-20-19-24-30.hsd3.la.comc ast.net

That's the value I'm after.

Thanks,
Brett

[Gordon Burditt]

Re: How to get visitor host name?

>I can get the IP address of a visitor on my site by

>
>$_SERVER['REMOTE_ADDR'];
>
>how do I get the corresponding URL. If the user is on Comcast, the URL
>(host name) may look like:
>
>d-20-19-24-30.hsd3.la.comc ast.net
>
>That's the value I'm after.

A host name and a URL are not the same thing.

Use a reverse DNS lookup: see gethostbyaddr() .

[pangea33]

Re: How to get visitor host name?


brett wrote:

I can get the IP address of a visitor on my site by
>
$_SERVER['REMOTE_ADDR'];
>
how do I get the corresponding URL. If the user is on Comcast, the URL
(host name) may look like:
>
d-20-19-24-30.hsd3.la.comc ast.net
>
That's the value I'm after.
>
Thanks,
Brett

Just use the gethostbyaddr() function...

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

echo $hostname;
?>