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in reply to Re: Re: regex to validate e-mail addresses and phone numbers
in thread regex to validate e-mail addresses and phone numbers

Forgive my newbieness in asking, but I was taught that using a premade package like Valid is the best solution 99% of the time, and that most of the 1% was for when space/cpu and such were at issue.

So I am wondering what would make you lean towards a home-grown solution over the module?

Thank you in advance. ~Adam Marquis
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Re: Re: Re: Re: regex to validate e-mail addresses and phone numbers
by Limbic~Region (Chancellor) on Feb 10, 2004 at 16:56 UTC
    makar,
    Have you ever heard of an XY problem? It is when someone asks how to do Y when they really want to do X. They ask how to do Y because they believe it is the best way to accomplish X. The people that they ask go through many iterations of "try this", followed by "that won't work because of". I am not suggesting to use something other than Email::Valid if that truly is what is desired. What I am saying that is depending on the circumstance, other solutions may be the way to go.

    For instance, say the problem is receiving spam messages from addresses that include % symbols and @ signs. You believe that it isn't a valid email address since you have never seen it before. You use Email::Valid and you find out that it is very valid and is a common trick for open-relays. Hmmmm - what do I do? You create your own regex that says I do not care if this is valid, no legitimate mail I receive uses this syntax so I am going to get rid of it.

    Cheers - L~R

      Understood, thank you very much.