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Hex regex
Posted: Sat Feb 17, 2007 12:05 am
by nwp
I need a regex pattern to match "2B84-5UD-80T7"
i.e. 4 hexadecimals separated by "-" the length of each part (Separated by -) can be 1, 2, 3, .........................
I've tried the following
But it did not work.
would anyone please make one for me ??
EDIT
Small caps alphabets are not allowed also thats only A-Z no a-z
Posted: Sat Feb 17, 2007 2:17 am
by GeertDD
Code: Select all
/^([0-9A-Z]+)-([0-9A-Z]+)-([0-9A-Z]+)$/
Edit:
Hmm, I'd love to simplify this regex using backreferences within the pattern, but PCRE doesn't seem to support this..?
Posted: Sat Feb 17, 2007 3:31 am
by nwp
Thanks
Posted: Sat Feb 17, 2007 8:27 am
by feyd
GeertDD wrote:Edit:
Hmm, I'd love to simplify this regex using backreferences within the pattern, but PCRE doesn't seem to support this..?
Yes, it does. However it does not use the pattern referenced. It uses the matched text.
Side note: the characters aren't hexadecimal.
Posted: Sat Feb 17, 2007 9:12 am
by GeertDD
Thanks for the clarification, feyd. Now I understand.
Had never really used backreferences within a pattern before and this seemed like a good situation to test them -- not.

Posted: Sat Feb 17, 2007 9:48 am
by Chris Corbyn
Hmm, that doesn't look like hexadecimal to me.... [0-9A-F] would be hexadecimal.
Posted: Sun Feb 18, 2007 10:17 am
by GeertDD
d11wtq wrote:Hmm, that doesn't look like hexadecimal to me.... [0-9A-F] would be hexadecimal.
Right, but if nwp needs to match "2B84-5UD-80T7", you need more than hexadecimal characters alone. I guess he'll be able to figure it out now.
