bindingmodel

<?php

class UserRegForm
{
    private $username;
    private $password;
    private $confirm;
    private $email;

    public function getUsername()
    {
        return $this->username;
    }

    public function setUsername($username)
    {
        $this->username = $username;
    }

    public function getPassword()
    {
        return $this->password;
    }

    public function setPassword($password)
    {
        $this->password = $password;
    }

    public function getConfirm()
    {
        return $this->confirm;
    }

    public function setConfirm($confirm)
    {
        $this->confirm = $confirm;
    }

    public function getEmail()
    {
        return $this->email;
    }

    public function setEmail($email)
    {
        $this->email = $email;
    }


}

class UserController
{
    public function registerPost(UserRegForm $form)
    {
        if ($form->getPassword() != $form->getConfirm()) {
            // do smth;
        }
    }
}

$form = new UserRegForm();
$formInfo = new \ReflectionClass($form);
foreach ($_POST as $key => $value) {
    if (!$formInfo->hasProperty($key)) {
        throw new Exception("POST malformed");
    }

    $setterMethod = 'set' . ucfirst($key);
    $form->$setterMethod($value);
}
$controller = new UserController();
$controller->registerPost($form);