Display/log host name only

Posted on 2003-03-25
Medium Priority
Last Modified: 2006-11-17
$host = gethostbyaddr($ip);

This will return the user's IP address and Host in a single line. If I wish to solely display the Host and still be able to return each value individually how would I go about that? In short I still want to be able to log the user's IP address, but only display the Host name.

Question by:getWise
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Accepted Solution

Kriek earned 300 total points
ID: 8203947
    $ip = $_SERVER['REMOTE_ADDR'];
    $fullhost = gethostbyaddr($ip);
    $host = preg_replace("/^[^.]+./", "*.", $fullhost);

IP address: <?=$ip?> | Host: <?=$host?>

Using your example aside from assigning a superglobal to a variable. You can still log the IP address of your visitors and only show the hostname or show them both.


Author Comment

ID: 8203965
Thanks Kriek! That is exactly what I was looking for. Although I am not familiar with the slang superglobal could you point me in the right direction as far as manual references, perhaps?

Expert Comment

ID: 8204003
You could classify superglobal arrays (4.1.0) under ..

Predefined variables: http://www.php.net/manual/en/language.variables.predefined.php 

I suppose, but $_SERVER is also considered a ..

Reserved predefined variable: http://www.php.net/manual/en/reserved.variables.php 

I started using superglobals just after PHP 4.2.0 was released. (External variables are no longer registered in the global scope by default, register_globals off by default)

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