More simplifications

Author: javiereguiluz

configuration/micro_kernel_trait.rst

@@ -34,7 +34,7 @@ Next, create an ``index.php`` file that defines the kernel class and runs it:
         use Symfony\Component\HttpKernel\Kernel as BaseKernel;
         use Symfony\Component\Routing\Attribute\Route;
 
-        require __DIR__.'/vendor/autoload.php';
+        require_once dirname(__DIR__).'/vendor/autoload_runtime.php';
 
         class Kernel extends BaseKernel
         {
@@ -57,11 +57,9 @@ Next, create an ``index.php`` file that defines the kernel class and runs it:
             }
         }
 
-        $kernel = new Kernel('dev', true);
-        $request = Request::createFromGlobals();
-        $response = $kernel->handle($request);
-        $response->send();
-        $kernel->terminate($request, $response);
+        return static function (array $context) {
+            return new Kernel($context['APP_ENV'], (bool) $context['APP_DEBUG']);
+        }
 
     .. code-block:: php
 
@@ -73,7 +71,7 @@ Next, create an ``index.php`` file that defines the kernel class and runs it:
         use Symfony\Component\HttpKernel\Kernel as BaseKernel;
         use Symfony\Component\Routing\Loader\Configurator\RoutingConfigurator;
 
-        require __DIR__.'/vendor/autoload.php';
+        require_once dirname(__DIR__).'/vendor/autoload_runtime.php';
 
         class Kernel extends BaseKernel
         {
@@ -100,11 +98,9 @@ Next, create an ``index.php`` file that defines the kernel class and runs it:
             }
         }
 
-        $kernel = new Kernel('dev', true);
-        $request = Request::createFromGlobals();
-        $response = $kernel->handle($request);
-        $response->send();
-        $kernel->terminate($request, $response);
+        return static function (array $context) {
+            return new Kernel($context['APP_ENV'], (bool) $context['APP_DEBUG']);
+        }
 
 That's it! To test it, start the :doc:`Symfony Local Web Server
 </setup/symfony_server>`: