> Is it possible to reverse lookup (like here
http://www.whatismyipaddress.com/reverse.asp) to find the domain with PHP? I
assume a DNS lookup requires an external server somewhere?
>
you can use exec or similar and to a reverse lookup like that... a
traceroute should cover it. please don't copy and paste my code, just giving
you an idea of what you'll do...
exec("traceroute ".$ip." > file.tmp")
then read the contents of file.tmp and you should be able to get the whole
of the traceroute. this brings up certain issues with speed of a traceroute
and run times of a script. also there may be a better way of doing this
other than piping the contents into a temporary file, but i've had issues
with reading what exec() outputs before (or whatever system call function
you'd like to use)
... hope this helps a little
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