rdns lookup

It is a system for naming computer and network service that is organised into a hierarchy of domains. DNS naming is used in TCP/IP networks, such as the Internet, to locate computers and services through user-friendly names.
[insert_php] include ‘hm/rdnsgetfunction.php’;[/insert_php]
[insert_php]
if($iserror==0){
echo “
echo “
| IP | Reverse DNS | Host IP | Match | 
|---|---|---|---|
| “.$rdnsarr[$row][‘IP’].” | “.$rdnsarr[$row][‘rDNS’].” | “.$rdnsarr[$row][‘Hostip’].” | 
“;}[/insert_php]