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)

{

$bin = sprintf("b",(ord($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)));

}

?>