Re: Why is it so complicated?

[David Child]

Feel free not to use it if you find it too complicated. I went for the
class approach because I wanted to atomise the process and comment it.

The script could easily be converted to a single regex if you prefer.
Though nobody in their right mind would call that regex (or yours,
packed as it is with nested assertions) a simple one.

Dave

On Tue, Dec 15, 2009 at 2:40 PM, Michael Rushton
<miker...@hotmail.co.uk> wrote:
> Why use a class with lots of functions to do what a simple regex can
> do? Here's what I have, to be used with preg_match(). I'm not sure
> what this regex is lacking (other than checking to see if the domain
> name is real, or if the local-part is in use on that domain name):
>
>
> /^(?!.{255,})(?!.{65,}@)(?:(?:\"[^\"]{1,62}\")|(?:[a-z0-9!#$%&'*+\/=?
> ^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+\/=?^_`{|}~-]+)*))@(?:(?:\[(?:(?:25[0-5]|
> 2[0-4][0-9]|[01]?[0-9]{1,2})\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9]
> {1,2})\])|(?:(?!.*[^.]{64,})(?:(?:xn--)?[a-z0-9]+(?:-[a-z0-9]+)*\.)
> {1,127}(?:xn--)?[a-z0-9]+(?:-[a-z0-9]+)*))$/i
>
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