Created
April 3, 2013 01:00
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looks up an ip address in a DNSBL zone
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| <?php | |
| $zone = 'dnsbl.example.com'; | |
| if (isset($_REQUEST['ip'])) { | |
| $ip = preg_replace('/[^0-9.]/', '', $_REQUEST['ip']); | |
| if(filter_var($ip, FILTER_VALIDATE_IP)) { | |
| $fields = explode('.', $ip); | |
| $fields = array_reverse($fields); | |
| $reverse_ip = implode('.', $fields); | |
| $record = $reverse_ip . '.' . $zone; | |
| $result = dns_get_record($record, DNS_A); | |
| } else { | |
| } | |
| } | |
| ?> | |
| <html> | |
| <head></head> | |
| <body> | |
| <pre> | |
| <?php if (isset($result) && !empty($result)) { | |
| echo "<font color=red>$ip listed!</font>"; | |
| } elseif (isset($ip)) { | |
| echo "$ip not listed."; | |
| } ?> | |
| </pre> | |
| <form> | |
| IP address: <input type="text" name="ip" value="<?=$ip?>"/> | |
| <input type="submit"/> | |
| </form> | |
| <small> | |
| Contact: syadmin at example dot net | |
| </small> | |
| </body> | |
| </html> |
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