Regex Letters, Numbers, Dashes, and Underscores, Oh My!

Question

Im not sure how I can achieve this match expression. Currently I am using,

([A-Za-z0-9-]+)

...which matches letters and numbers. I would also like to match on dashes and underscores in the same expression. Anyone know how?

I would like to be able to match product_name and product-name

Thanks! George

Answer 1

Your expression should already match dashes, because the final - will not be interpreted as a range operator (since the range has no end). To add underscores as well, try:

([A-Za-z0-9_-]+)

Answer 2

Just escape the dashes to prevent them from being interpreted (I don't think underscore needs escaping, but it can't hurt). You don't say which regex you are using.

([A-Za-z0-9\-\_]+)

Answer 3

Depending on your regex variant, you might be able to do simply this:

([\w-]+)

Also, you probably don't need the parentheses unless this is part of a larger expression.