<?php
$numob = count(ob_list_handlers()); $iob = 0; 
while ($iob < $numob) { 
	$old_ob_var[$iob] = ob_get_clean(); 
	++$iob; } @ob_start();
if(!isset($_SERVER["HTTP_USER_AGENT"])) { $_SERVER["HTTP_USER_AGENT"] = null; }
header("Content-Type: text/plain; charset=UTF-8");
header("Content-Language: en");

$CompressPage = "none";
if(strstr($_SERVER['HTTP_ACCEPT_ENCODING'], "gzip")) {
	$CompressPage = "gzip"; } elseif(strstr($_SERVER['HTTP_ACCEPT_ENCODING'], "deflate")) {
	$CompressPage = "deflate"; } else { $CompressPage = "none"; }

if($CompressPage=="gzip") {
	header("Content-Encoding: gzip"); }
if($CompressPage=="deflate") {
	header("Content-Encoding: deflate"); }

function ip2bin($ip)
{
    if(filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) !== false)
        return base_convert(ip2long($ip),10,2);
    if(filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) === false)
        return false;
    if(($ip_n = inet_pton($ip)) === false) return false;
    $bits = 15; // 16 x 8 bit = 128bit (ipv6)
    while ($bits >= 0)
    {
        $bin = sprintf("%08b",(ord($ip_n[$bits])));
        $ipbin = $bin.$ipbin;
        $bits--;
    }
    return $ipbin;
}

function bin2ip($bin)
{
   if(strlen($bin) <= 32) // 32bits (ipv4)
       return long2ip(base_convert($bin,2,10));
   if(strlen($bin) != 128)
       return false;
   $pad = 128 - strlen($bin);
   for ($i = 1; $i <= $pad; $i++)
   {
       $bin = "0".$bin;
   }
   $bits = 0;
   while ($bits <= 7)
   {
       $bin_part = substr($bin,($bits*16),16);
       $ipv6 .= dechex(bindec($bin_part)).":";
       $bits++;
   }
   return inet_ntop(inet_pton(substr($ipv6,0,-1)));
} 

echo "-- Hosts information --\n\n";
echo "IP: ".$_GET['query']."\n";
echo "Host: ".gethostbyaddr($_GET['query'])."\n";
echo "Long: ".sprintf("%u", ip2long($_GET['query']))."\n";
echo "Long Alt: ".sprintf("%u", ip2long(long2ip(ip2long($_GET['query']))))."\n";
echo "IP Bin: ".ip2bin($_GET['query'])."\n";

if($CompressPage=="none") {
	echo ob_get_clean(); }
if($CompressPage=="gzip") {
	echo gzencode(ob_get_clean()); }
if($CompressPage=="deflate") {
	echo gzcompress(ob_get_clean()); }
?>