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Old August 24th, 2006, 09:30 AM
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Default RegEx Question - Disregard

Hey everyone,
I have been messing with this expression forever; what I am trying to do is determine if a date (year part) is between 1900 and 9999.

This expression will validate any year between 1900 - 1999 and 9000 - 9999

(0[1-9]|1[012])[/](0[1-9]|[12][0-9]|3[01])[/](19|99)\d\d

So, I figured that I would just make a range as such:

(0[1-9]|1[012])[/](0[1-9]|[12][0-9]|3[01])[/]([19-99])\d\d

Which fails when you enter any date between the aforementioned range so, I am suspecting, that the range is only valid for [0-9] so does that mean I am going to have to do a condition for each possible 1000 years?

--Disregard

After I posted this I thought the logic out a bit more and this expression works:
(0[1-9]|1[012])[/](0[1-9]|[12][0-9]|3[01])[/]((19)|([2-9][0-9]))\d\d
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