<?php $ip = "217.165.90.184"; echo "<br />ip: $ip"; $reversed = implode(".",array_reverse(explode(".", $ip))); echo "<br />reversed: $reversed"; $reversedlong = sprintf("%u",ip2long(implode(".",array_reverse(explode(".", $ip))))); echo "<br />reversedlong: $reversedlong"; ?>
ip: 217.165.90.184 reversed: 184.90.165.217 reversedlong: 3092948441