I prefer using

gedrox — Wed, 30 Apr 2008 06:05:35 -0400

I prefer using filter_var($var, FILTER_VALIDATE_EMAIL). And, by the way, your regular expression is not correct. E.g. '+' sign can be used in the email address.

Good points Loïc. The

davidwalsh — Thu, 06 Mar 2008 22:13:25 -0500

Good points Loïc. The confirmation email is always best, but this functionality could be used to BEFORE the confirmation stage to prevent bad email addresses.

Yeah well that's what the

lhoguin — Thu, 06 Mar 2008 21:49:18 -0500

Yeah well that's what the PHP documentation already say.

What I wonder is whether you'll find some real address not allowed by this, as said in this comment in the documentation.

And well, you check a domain, not the whole email address, so the local part can simply be garbage, it could even contain control characters if you only use this function. It also can't really tell that the address is real. After all you could enter whatever@hotmail.com and be good.

In my opinion, the best way to validate an email address is to send a confirmation email, and to filter trash mail domains like trash-mail.de and friends. I would use both regex and domain validation as an indication to the user to prevent him from making a mistake while entering his email address. But not preventing him for submitting it if he's sure it's good. After all, if his email address is really correct, you might lose a customer.

Finally, checkdnssrr is not available on Windows. Take that in consideration if your application needs to be portable.

PHP Zone - Comments for "PHP Email Validator - Email MX DNS Record Check"

I prefer using

Good points Loïc. The

Yeah well that's what the