<?PHP

use Phalcon\Mvc\Controller;

class sessionController extends Controller
{
    public function loginAction()
    {
        // 检测cookie之前有没被设置过
        if ($this->cookies->has('remember-me')) {

            // 获取cookie
            $rememberMe = $this->cookies->get('remember-me');

            // 获取cookie的值
            $value      = $rememberMe->getValue();
        }
    }

    public function startAction()
    {
        $this->cookies->set('remember-me', 'some value', time() + 15 * 86400);
    }

    public function logoutAction()
    {
        // Delete the cookie
        $this->cookies->get('remember-me')->delete();
    }
}

<?php

use Phalcon\Http\Response\Cookies;

$di->set('cookies', function () {
    $cookies = new Cookies();

    $cookies->useEncryption(false);

    return $cookies;
});

<?php

use Phalcon\Crypt;

$di->set('crypt', function () {
    $crypt = new Crypt();

    $crypt->setKey('#1dj8$=dp?.ak//j1V$'); // 使用你自己的key！

    return $crypt;
});