<?php
use React\Dns\Config\Config;
use React\Dns\Resolver\Factory;
use React\Dns\Model\Message;
require __DIR__ . '/../vendor/autoload.php';
$loop = React\EventLoop\Factory::create();
$config = Config::loadSystemConfigBlocking();
$server = $config->nameservers ? reset($config->nameservers) : '8.8.8.8';
$factory = new Factory();
$resolver = $factory->create($server, $loop);
$ip = isset($argv[1]) ? $argv[1] : '8.8.8.8';
if (@inet_pton($ip) === false) {
exit('Error: Given argument is not a valid IP' . PHP_EOL);
}
if (strpos($ip, ':') === false) {
$name = inet_ntop(strrev(inet_pton($ip))) . '.in-addr.arpa';
} else {
$name = wordwrap(strrev(bin2hex(inet_pton($ip))), 1, '.', true) . '.ip6.arpa';
}
$resolver->resolveAll($name, Message::TYPE_PTR)->then(function (array $names) {
var_dump($names);
}, function (Exception $e) {
echo $e->getMessage() . PHP_EOL;
});
$loop->run();
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