[PHP] Is there any way of knowing User Currently Logged On?

[Mulley, Nikhil]

Hi Guys,
 
Is there any way of finding the current user logged on the remote system
 
I have a perl script which gets the user name who is currently logged on a remote 
Windows Machine
 
 
 
 
 
#LoggedOnUsers(server, userRef).pl
use Win32::NetAdmin;
use strict;
use vars qw($server @users_list);
if(@ARGV>0){
$server=$ARGV[0];
}
else{
print "\n\nEnter a valid Hostname  or IP Address : ";
chomp($server=<STDIN>);
}
Win32::NetAdmin::LoggedOnUsers($server,[EMAIL PROTECTED]);
foreach(@users_list) {
print "\n$server    --     $_";
}
 
 
This one gets the users logged in on a remote Windows machine , Is there a similar way 
of finding / doing the same regardless of an OS, Can it be done through a Web Browser 
????
 
Any Clues ??
 
--Nikhil.