Multiple Validations ..

[eluser]Unknown[/eluser]
In your index function you made a small mistake

Code:

if($_POST['submit'] = "Verzenden"){
            $this->validateMail();
        }
        if($_POST['submit'] = "Aanmelden"){
            $this->validateLogin();
        }

Should be ...

Code:

if($_POST['submit'] == "Verzenden"){
            $this->validateMail();
        }
        if($_POST['submit'] == "Aanmelden"){
            $this->validateLogin();
        }

You're accidentally setting the $_POST variables instead of comparing them.

Simple mistake -- I make the same one more often than I'd like to admit