Email validation with multiple dots in domain name

[JDJones]

I have a script that uses the following eregi to check for a valid email
address:

if (!eregi("^[_\.0-9a-z-]+@([0-9a-z][0-9a-z-]+\.)+[a-z]{2,4}$", $email)) {
print_error("your <b>email address</b> is invalid");
}

While this works fine on most email addresses, it will not allow anyone
who has more than one dot in their domain name (like [e-mail]) to
submit. How can I change this to allow multiple dots in the domain?

Thanks.

[Justin Koivisto]

JDJones wrote:

I have a script that uses the following eregi to check for a valid email
address:

if (!eregi("^[_\.0-9a-z-]+@([0-9a-z][0-9a-z-]+\.)+[a-z]{2,4}$", $email)) {
print_error("your <b>email address</b> is invalid");
}

While this works fine on most email addresses, it will not allow anyone
who has more than one dot in their domain name (like [e-mail]) to
submit. How can I change this to allow multiple dots in the domain?

eregi("^[_\.0-9a-z-]+@([0-9a-z][0-9a-z.-]+\.)+[a-z]{2,4}$", $email)

--
Justin Koivisto - sp**@koivi.com
PHP POSTERS: Please use comp.lang.php for PHP related questions,
alt.php* groups are not recommended.

[Tim Van Wassenhove]

On 2003-12-11, JDJones <se******@sprynet.com> wrote:

I have a script that uses the following eregi to check for a valid email
address:

if (!eregi("^[_\.0-9a-z-]+@([0-9a-z][0-9a-z-]+\.)+[a-z]{2,4}$", $email)) {
print_error("your <b>email address</b> is invalid");
}

While this works fine on most email addresses, it will not allow anyone
who has more than one dot in their domain name (like [e-mail]) to
submit. How can I change this to allow multiple dots in the domain?

As your expression seems rather incomplete,

Have a look at http://www.ex-parrot.com/~pdw/Mail-RFC822-Address.html
--
verum ipsum factum

[JDJones]

Justin Koivisto wrote:

JDJones wrote:

if (!eregi("^[_\.0-9a-z-]+@([0-9a-z][0-9a-z-]+\.)+[a-z]{2,4}$",
$email)) {
print_error("your <b>email address</b> is invalid");
}

While this works fine on most email addresses, it will not allow
anyone who has more than one dot in their domain name (like
[e-mail]) to submit. How can I change this to allow multiple
dots in the domain?

eregi("^[_\.0-9a-z-]+@([0-9a-z][0-9a-z.-]+\.)+[a-z]{2,4}$", $email)

Thank you, Justin. I appreciate the help. Amazing what adding a dot in
the right place can do, huh? :)