Re: Better RegEX to find IPs

[Chris Frederick <cdf123 () cdf123 net>]

This is the one I've used.  It's broken up into multiple variables, but
you could combine it if you wanted.  It'll still match 0.0.0.0 and
255.255.255.255 though.

$REG0TO255 = '(2([0-4][0-9]|5[0-5])|1[0-9]?[0-9]|[1-9][0-9]?|[0-9])';
$REGIP = $REG0TO255 . '(\.' . $REG0TO255 . '){3}';

Chris Frederick

Adrian Crenshaw wrote, On 12/01/10 16:37:
> Thanks, but the one they are calling "Accurate" is the same one I'm
> using as best as I can tell. I don't need to split the the octets.
>
> Thanks,
> Adrian
>
> On Wed, Dec 1, 2010 at 5:14 PM, teacher1st <teacher1st () bellsouth net
> <mailto:teacher1st () bellsouth net>> wrote:
>
>     Some suggestions here:
>     http://answers.oreilly.com/topic/318-how-to-match-ipv4-addresses-with-regular-expressions/
>
>
>
>     On 12/1/2010 4:08 PM, Adrian Crenshaw wrote:
> >     Hi All,
> >     ��� I've Googled around and not had much luck finding something
> >     better. I'm trying to parse a file in Python and extract all IPs.
> >     Currently I'm using:
> >
> >
> >     IPsInFile =
> >     re.findall('(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)',TextBlob)
> >
> >     But this gives me some bad results such as:
> >
> >     .106
> >     .123.102
> >     .128
> >     .143
> >     .144
> >     .186.64
> >     .190
> >     .2
> >     .200.65
> >     .208.7
> >     .214
> >     .24.124.224
> >     .250.23.32
> >     .36.132.142
> >     .73
> >     0.204.35.172
> >     0.36.132.60
> >     0.6.1.32
> >     0.6.1.33
> >     0.64
> >     1.159.84
> >     1.33
> >
> >     Any ideas for a better regular expression to use?
> >
> >     Thanks,
> >     Adrian
> >
> >
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