Phalcon model public/protected var's test

phalcon-models.php

<?php

use Phalcon\DI , Phalcon\Db\Adapter\Pdo\Mysql as Connection , Phalcon\Mvc\Model\Manager as ModelsManager , Phalcon\Mvc\Model\Metadata\Memory as MetaData , Phalcon\Mvc\Model;

$di = new DI();

//Setup a connection
$di->set(
    'db' ,
    new Connection(array(
                        'adapter'  => 'Mysql' ,
                        'host'     => 'localhost' ,
                        'username' => 'root' ,
                        'password' => '' ,
                        'dbname'   => 'test' ,
                        'charset'  => 'utf8'
                   ))
);

//Set a models manager
$di->set('modelsManager' , new ModelsManager());

//Use the memory meta-data adapter or other
$di->set('modelsMetadata' , new MetaData());

class modeltest extends \Phalcon\Mvc\Model
{

    public $publicvar;
    protected $protectedvar;

    public function setProtectedvar($value)
    {

        $this->protectedvar = $value;
    }

    public function getProtectedvar()
    {

        return $this->protectedvar;
    }

}

$modelTest = new modeltest();

$modelTest->setProtectedvar('testProtect');
$modelTest->publicvar = 'testPublic';

echo $modelTest->getProtectedvar();
echo '<br />';
echo $modelTest->publicvar;
echo '<br />';

$result = $modelTest->toArray();

print_r($result);