AppKernel.php

<?php

use Symfony\Component\HttpKernel\Kernel;
use Symfony\Component\Config\Loader\LoaderInterface;

use Symfony\Component\DependencyInjection\ContainerBuilder;

class AppKernel extends Kernel
{
    public function __construct($environment, $debug)
    {
        parent::__construct($environment, $debug);
        date_default_timezone_set('Asia/Shanghai');
    }

    public function registerBundles()
    {
        $bundles = [
            new \Symfony\Bundle\FrameworkBundle\FrameworkBundle(),
            new \Symfony\Bundle\TwigBundle\TwigBundle(),
            new \Sensio\Bundle\FrameworkExtraBundle\SensioFrameworkExtraBundle(),
            new \Symfony\Bundle\MonologBundle\MonologBundle(),
            new \Doctrine\Bundle\DoctrineBundle\DoctrineBundle(),
            new Doctrine\Bundle\MigrationsBundle\DoctrineMigrationsBundle(),
            new \AppDemo\AppBundle\AppBundle(),
        ];


        if ($this->getEnvironment() == 'dev') {
            $bundles[] = new \Symfony\Bundle\WebProfilerBundle\WebProfilerBundle();
            $bundles[] = new \Sensio\Bundle\GeneratorBundle\SensioGeneratorBundle();
            $bundles[] = new \Symfony\Bundle\DebugBundle\DebugBundle();
        }

        return $bundles;
    }

    public function registerContainerConfiguration(LoaderInterface $loader)
    {
        $loader->load(__DIR__ . '/config/config.yml');

        $isDevEnv = $this->getEnvironment() == 'dev';

        $loader->load(function (ContainerBuilder $containerBuilder) use ($isDevEnv) {
            if ($isDevEnv) {
                $containerBuilder->loadFromExtension('web_profiler', [
                    'toolbar' => true
                ]);

                $containerBuilder->loadFromExtension('framework', [
                    'router' => [
                        'resource' => '%kernel.root_dir%/config/routing_dev.yml'
                    ]
                ]);
            }
        });
    }

}