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Chris Grau wrote:
> I'm a sucker for ugly regular expressions. Please share.
Women and children may want to avert their eyes:
\b(?:(?: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]?)\b
Or if you want to capture the four numbers of the IP you can use this
monster:
(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?))?
If you really don't care whether it is a valid IP but just a group of
four numbers you can use:
\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\b
but that is rarely acceptable.
- --
Tracy R Reed Read my blog at http://ultraviolet.org
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