[RESOLVED] RegEx Question

[sevenhalo]

(([0])?[1-9])|[1][0-2]

This will allow any digit 1 through 9 and also allow it to lead with a zero. I run into a problem when I try to do 10, 11 and 12. Those cases are the ones I specified right of the alteration character (atleast, I thought?).

What am I doing wrong, why doesn't that match? Since it's an alteration, I figured it would work just like an "or" and ignore everything on the left. Am I missing something obvious?

Edit:

I just tried:
(([0])?[1-9])|1[0-2]
Same problem...

[sevenhalo]

The expression I'm using now is:

((0)?[1-9])|(1[0-2])

((0)?[1-9]) will validate 1-9 with an optional leading zero
(1[0-2]) will validate 10-12

When I use the full expression with |, it only validates the left half.

The alteration is deffinitely the problem. Anyone know what I'm doing wrong?

Edit: I tested the two halves, they work individually.

[sevenhalo]

Ok, someone's gotta know what I'm doing wrong.

Rep points avaliable as always, please help me out.

[sevenhalo]

*throws hands up in the air*

Ok, I give up. I'll just do a nasty run-on validation function instead of any client-side validation. I'm running out of time.

Thanks anyway.

[DeadEyes]

try this
(^0?[1-9]$)|(^1[0-2]$)

[sevenhalo]

Worked, thanks!