unless($tax_collection ~= /^([a-zA-Z]+|\b,\b)+$/) {...

No, that's not going to work because it allows the comma to appear at the beginning and/or end of the string, which doesn't meet the original post's spec. Beginning and End of string count as word boundries, so your method fails.

Update: Now it's a matter of public record: I made a simple mistake in intrepreting Anonymous Monk's regexp. (S)He is correct in his assertion. The method works.


Dave


"If I had my life to do over again, I'd be a plumber." -- Albert Einstein

In reply to Re: Re: regex: only want [a-zA-Z] and comma chars in a string by davido
in thread regex: only want [a-zA-Z] and comma chars in a string by heezy

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