minor #15008 [Routing] Add PHP Attribute route example to the controller (wkania)

This PR was merged into the 5.2 branch.

Discussion
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[Routing] Add PHP Attribute route example to the controller

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Commits
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832436b [Routing] Add PHP Attribute route example to the controller

Author: javiereguiluz

controller/service.rst

@@ -41,6 +41,22 @@ a service like: ``App\Controller\HelloController::index``:
             }
         }
 
+    .. code-block:: php-attributes
+
+        // src/Controller/HelloController.php
+        namespace App\Controller;
+
+        use Symfony\Component\Routing\Annotation\Route;
+
+        class HelloController
+        {
+            #[Route('/hello', name: 'hello', methods: ['GET'])]
+            public function index()
+            {
+                // ...
+            }
+        }
+
     .. code-block:: yaml
 
         # config/routes.yaml
@@ -105,6 +121,23 @@ which is a common practice when following the `ADR pattern`_
             }
         }
 
+    .. code-block:: php-attributes
+
+        // src/Controller/Hello.php
+        namespace App\Controller;
+
+        use Symfony\Component\HttpFoundation\Response;
+        use Symfony\Component\Routing\Annotation\Route;
+
+        #[Route('/hello/{name}', name: 'hello')]
+        class Hello
+        {
+            public function __invoke($name = 'World')
+            {
+                return new Response(sprintf('Hello %s!', $name));
+            }
+        }
+
     .. code-block:: yaml
 
         # config/routes.yaml