<? Php
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_ton ($ ip) === false) return false;
$ Bits = 15; // 16x8 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) // 32 bits (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_ton (substr ($ ipv6, 0,-1 )));
}
?>
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