Zend FR

<?php

class IndexController extends Zend_Controller_Action
{

    public function init()
    {
        /* Initialize action controller here */
    }

    public function indexAction()
    {
        if (Zend_Auth::getInstance()->hasIdentity()){
            $this->_redirect('acceuil/index');
        }

        $request = $this->getRequest();
        $form = new Form_Login();
        $this->view->form = $form;

        if ($request->isPost()){
            if ($form->isValid($this->_request->getPost())){
                $username = $form->getValue('login');
                $password = $form->getValue('password');

                $authAdapter = $this->getAuthAdapter();

                $authAdapter->setIdentity($username)
                            ->setCredential($password);
                $auth = Zend_Auth::getInstance();
                $result = $auth->authenticate($authAdapter);

                if ($result->isValid()){
                    $authStorage = $auth->getStorage();
                    $authStorage->write($authAdapter->getResultRowObject(null, 'Password'));
                    $this->_redirect('acceuil/index');
                }else{
                    $this->view->messageErreur = 'Nom utilisateur ou mot de passe erroné';
                }
            }else{
                $this->view->messageErreur = 'Champs de saisie obligatoires';
            }
        }
    }

    public function logoutAction()
    {
        // action body
       Zend_Auth::getInstance()->clearIdentity();
       $this->_redirect('index/index');
    }

    private function getAuthAdapter()
    {
        $authAdapter = new Zend_Auth_Adapter_DbTable(Zend_Db_Table::getDefaultAdapter());

        $authAdapter->setTableName('users')
                    ->setIdentityColumn('Username')
                    ->setCredentialColumn('Password')
                    ->setCredentialTreatment('MD5(?)');

        return $authAdapter;
    }


}