Email validation

[hotmodi]

Hi

I am working on getting my email form validated. The user has to write an email containing "@", ".", "dk or com or org or net", but I cant get it to work.

I am using the strstr function and I understand that writing only "dk" well not work.

 

if (strstr($email, "@") && strstr($email, ".") && strstr($email, "dk"))

[Atli]

Hey.

To do something like that, you would be better of using a regular expression. They are kind of tough to learn, but well worth it.

For example, this should validate *most* email addresses coming from .net, .com or .dk domains.
[code=php]<?php
$regexp = '#^[A-Z0-9._%+\-]+@[A-Z0-9.\-]+\.(net|com|dk) $#i';
$email = $_POST['email'];
if(preg_match($ regexp, $email)) {
echo "Valid!";
}
else {
echo "Invalid!";
}
?>[/code]
That regular expression (excluding the modification that allows only the three domains) comes from the regular-expressions.inf o site, which is one of the better resources on regular expressions out there. (They also have a nice tutorial, if you are interested.)

[hotmodi]

Hi Atli

Thanks for the help;) That work just fine