PHP Regular Expressions [solved]

[chemdude]

Yes! This board is now more open! I hope we can talk about asp.net here too...

Back on topic:

Well, I thought they were the same as javascript regular expressions. Apparently they're not because I get errors. So, I simplified my email validation regexp, and I want it to match "@" or "" (that's right, I want it to match "@" or nothing). I know how to match the "@" and the characters around it with "/^((.+?)@(.+?))$/i" but I thought "/^((.+?)@(.+?))|()$/i" would match the "@" or nothing, but it doesn't seem to work. Does anybody know the regexp to do this?

btw I also want a separate regexp that matches "." or nothing.

[acoolie530]

First of all, you can use if(preg_match("/^((.+?)@(.+?))$/i", $str) || empty($str)).

Here are some useful links for email validation.
Eregi - Php.net
Preg_match - Php.net
Email

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And yes, you can post about ASP in here.

[raisingdad]

bfr said:

Yes! This board is now more open! I hope we can talk about asp.net here too...

Yes, all server side coding languages are 'supported', we only had room to mention a few.

And by 'supported', I mean you won't get yelled at for posting about them - however I can't guarantee people here would be able to help with 'x' language.

[[dmsuperman]]

/^((.+?)@(.+?))$/i
I would use this though:
/^((.+?)@(.+?)\.(.+?))$/i
That matches a period in the domain.

[chemdude]

Thanks a lot. It's working fine now, and my first php mini-project is complete. I turned the code from here into a full-featured guestbook that works great overall.