- gethostbyaddr: documentation ( source)
- print_r: documentation ( source)
- dns_get_record: documentation ( source)
<?php
echo 'remote addr: '.$_SERVER['REMOTE_ADDR'].'<br>';
$details = gethostbyaddr($_SERVER['REMOTE_ADDR']).
print_r(dns_get_record(gethostbyaddr($_SERVER['REMOTE_ADDR'])),true);
echo $details;
?>