Re: problem with join(array, "")

Thanks for your help, I had a more experienced programmer here on campus look at it. She found that the documentation states that there's no difference between scalar and associative arrays in php. Hence, array[4] does not necessarily come after array[3], it all depends on the order in which the elements are assigned, not the subscript. So, ksort($array) does the job of sorting the array based on the key. This leaves me with: $octet[4] = strtok($remote_ip, "."); for ($i = 3; $i >= 1; $i--) { $octet[$i] = strtok("."); } ksort($octet); $revip = join("", $octet); echo $revip; Which does exactly what I want it to do, removes the dots from and reverses an ip address. Thanks again. dp