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What is a valid regex expression for currency?

Posted on 2015-01-09
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Hi:

I'm trying to quickly figure out a regex for the following numeric value.

Essentially so it look like a valid currency
- without commas (,)
- or dollar signs (\$)
- greater than 0.00

We have uncovered something like this, but it doesn't seem to work:
``````([1-9]{1}[0-9]{0,2}(\,[0-9]{3})*(\.[0-9]{0,2})?|[1-9]{1}[0-9]{0,}(\.[0-9]{0,2})?|0(\.[0-9]{0,2})?|(\.[0-9]{1,2})?)
``````

Thanks,
JohnB
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Question by:jxbma
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Accepted Solution

Qlemo earned 500 total points
If we can assume to always have two decimal digits (and hence a decimal point): '^[1-9]\d*\.\d\d|^0.([1-9][0-9]|0[1-9])'
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Author Comment

I would like the two (2) decimal digits to be optional.

Thanks,
JB
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LVL 68

Expert Comment

This will allow no decimal digits and exact two (I don't think 190.1 makes sense):
'^[1-9]\d*(\.\d\d)?|^0.([1-9][0-9]|0[1-9])'
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Author Closing Comment

Terrific!

I just extended it to be:    ^[1-9]\d*\.\d\d|^0.([1-9][0-9]|0[1-9])|^[1-9]\d*

Thanks,
JB
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