RegEx Pattern?

[Luke Ward]

I've never used the patterns before and wondered if anyone could tell me why
this does not work
[00-23]{2}:[00-58]{2}

I just want to validate 24 hour time entry.

Cheers

Luke

 

[Kevin Hutchison]

For the Perl RegEx Syntax, see:

http://groups.google.com/groups?hl=...r+Expression+24+hour+&ie=UTF-8&oe=UTF-8&hl=en

Your expression is treating numeric characters as NUMBERS, not characters.
What you have is essentially:

[0 0-2 3]{2}:[0 0-5 8]{2}, which would more properly be reduced to:
[0-3]{2}:[0-58]{2}

So, the intent of the expression allows 33:88, but not 12:36. (6 isn't
included in the second character class).

 

[Ken Arway]

((??:[01][\d])|(?:[2][0-3])):[0-5][\d])
should do it.

Ken

 

[Tony Nassar]

I believe this will work; I've tested it somewhat, and I'm sure you can
Google an equally good answer (or try PerlMonks or CPAN.org, that kind of
place).

\b(([0-1]?\d)|(2[0-3])):[0-5]\d\b