您需要创建自定义配置目录和/或文件,然后根据您使用的任何条件调整AppKernel以指向正确的AppKernel.例如,如果您要离开子域：
首先,更新您的前端控制器以获得新的超级全局.可能有更好的方法来做到这一点,我建议调查一下..

// web/app.PHP
use Symfony\component\HttpFoundation\Request;

/** @var \Composer\Autoload\ClassLoader $loader */
$loader = require __DIR__.'/../app/autoload.PHP';
include_once __DIR__.'/../var/bootstrap.PHP.cache';

list($scheme,$host) = explode('.',$_SERVER['SERVER_NAME']);
define(APP_CONfig_FILENAME,sprintf('@L_406_29@.yml',$host));

$kernel = new AppKernel('prod',false);
$kernel->loadClassCache();
//$kernel = new AppCache($kernel);

// When using the HttpCache,you need to call the method in your front controller instead of relying on the configuration parameter
//Request::enableHttpMethodParameteroverride();
$request = Request::createFromGlobals();
$response = $kernel->handle($request);
$response->send();
$kernel->terminate($request,$response);

现在在你的AppKernel中,使用这个新的超全局

// app/AppKernel.PHP
use Symfony\Component\HttpKernel\Kernel;
use Symfony\Component\Config\Loader\LoaderInterface;

class AppKernel extends Kernel
{
    public function registerContainerConfiguration(LoaderInterface $loader)
    {
        $loader->load($this->getProjectDir().'/app/config/' . APP_CONfig_FILENAME . '.yml');
    }
}

然后在你的example1.yml中

# app/config/mysubdomain.yml
imports:
    - { resource: 'parameters_example1.yml' }
    - { resource: 'routing_example1.yml' }