View source for Validating an email address

{{howto|Easy|[[Mark Wittens]] <mark@ibuildings.nl>}}

The validation of an email address is easy, just add the email attribute to the node with the email address like this:

<syntaxhighlight lang="php">
 $this->add(new atkEmailAttribute("email", false, AF_OBLIGATORY));
</syntaxhighlight>

The atkEmailAttribute contains a validation for an email address which will be called automatically, if the second parameter of the constructor is set to "true" a DNS check will be performed on the address domain as well.