course-tencent-cloud/app/Providers/FlashSession.php

<?php

namespace App\Providers;

use Phalcon\Flash\Session as PhFlashSession;

class FlashSession extends Provider
{

    protected $serviceName = 'flashSession';

    public function register()
    {
        $this->di->setShared($this->serviceName, function () {

            return new PhFlashSession([
                'error' => 'alert alert-danger',
                'success' => 'alert alert-success',
                'notice' => 'alert alert-info',
                'warning' => 'alert alert-warning',
            ]);
        });
    }

}