A good email validation?

NEW to PHP, please help

[livetoride]

Hi,

I recently posted about my form and the response I got helped me, so I figured I would try again here.

I'm trying to set up a good email validation. It works with my one email address, but I have one I use for personal, rather than work, and it is like this: [e-mail]. can someone tell me how to include the periods?

[justgowithit]

How about....

if (preg_match("/^[[:alnum:]][a-z0-9_\.\-]*@[a-z0-9\.\-]+\.[a-z]{2,4}$/", stripslashes(trim($_POST['email'])))) {
echo 'good';
} else {
echo 'bad';
}

... test it well ;)

[livetoride]

thanks so much.