DNS

1. /*
2. Example by b0lt
3. b0lt@dev-tek.orgThis e-mail address is being protected from spam bots, you need JavaScript enabled to view it
4. Example Name: dns.php
5. Tested On: PHP4
6. Notes: Example is to learn from i supose.
7. */
11. ?>

14. Hostname:

15. 
    
    or
    

16. IP:

17. 
    
18. 
    
24. if(isset($info)) {
25. if($info == "lookitup") {
26. if(!$dval1 && !$dval) {
27. echo "Error: You Left Both Forms Blank.";
28. return;
29. }
30. if(!$dval) {
31. $dlook1=gethostbyaddr($dvar1);
32. echo "$dval1 resolves (Reverse-DNS's) to $dlook1";
33. return;
34. }
35. $dlook=gethostbyname($dval);
36. echo "$dval resolves (DNS's) to $dlook";
37. }
38. }
39. ?>

http://gscripts.net/tutorials/PHP_Tutorials_and_Examples/PHP/view/DNS.html