Zend_Auth and Zend_Db

<?php

/**
APPLICATION_PATH . '/application/config/application.ini

resources.db.adapter = "Pdo_SQLite"
resources.db.params.dbname = APPLICATION_PATH "/data/db/zftraining.db"
resources.db.isDefaultTableAdapter = true

**/


public function authAction()
{
    // I love Zend Framework - MyPassword01
    $salt = 'I love Zend Framework';
    $email = $this->getRequest()->getParam('email');
    $password = md5($salt . ' - ' . $this->getRequest()->getParam('password'));

    $bootstrap = $this->getInvokeArg('bootstrap');
    $db = $bootstrap->getResource('db');
    if ($db instanceof Zend_Db_Adapter_Abstract) {
        $db->getProfiler()->setEnabled(true);
    }

    $auth = new Zend_Auth_Adapter_DbTable($db);
    $auth->setTableName('member')
         ->setIdentityColumn('email')
         ->setCredentialColumn('password')
         ->setIdentity($email)
         ->setCredential($password);

    try {
    $result = $auth->authenticate();
    } catch (Zend_Auth_Exception $e) {
        echo $e->getMessage();
    }
    $this->view->messages = $result->getMessages();
}