interger to I P address
bfeeny at mac.com
bfeeny at mac.com
Wed Aug 27 16:47:13 UTC 2008
The NANOG way: www.google.com
------Original Message------
From: Boyd, Benjamin R
To: Andree Toonk
To: nanog at nanog.org
Sent: Aug 27, 2008 12:38 PM
Subject: RE: interger to I P address
>>> The harder way:
>>>
>>> Decimal: 1089055123
>>> Hex (dashes inserted at octals): 40-E9-A9-93 Decimal (of
>each octet):
>>> 64-233-169-147 IP Address: 64.233.169.147
>>
>> The Python way
>>
>> >>> import socket, struct
>> >>> socket.inet_ntoa(struct.pack('>l', 1089055123))
>> '64.233.169.147'
>
>The Perl way:
>
>sub ntoa
>{
> my $one = shift;
> my $four = $one & 0xff;
> $one >>= 8;
> my $three = $one & 0xff;
> $one >>= 8;
> my $two = $one & 0xff;
> $one >>= 8;
> return "$one.$two.$three.$four";
>}
>
>#or in one line, like ipcalc does:
>sub ntoa_in_one_line { join(".", unpack("CCCC", pack("N", $_[0]))); }
>
>print ntoa(1089055123) . "\n";
>print ntoa_in_one_line(1089055123) . "\n";
>
>
The PHP way:
function convertIntegerToIpv4($integer)
{
$max_value = pow(2,32); //4,294,967,296
$bug_fix = 0;
settype($integer, float);
if($integer > 2147483647) $bug_fix = 16777216;
if(is_numeric($integer))
{
if ($integer >= $max_value || $integer < 0)
{
return ('Not a valid IPv4 integer');
}
$ip = (sprintf("%u.%u.%u.%u",
$integer / 16777216,
(($integer % 16777216) + $bug_fix) / 65536,
(($integer % 65536) + $bug_fix / 256) / 256,
($integer % 256) + $bug_fix / 256 / 256
)
);
return($ip);
}
else {
return('');
}
}
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