[#7844] add XML and PHP config examples

Author: xabbuh

configuration/override_dir_structure.rst

@@ -91,12 +91,40 @@ If your templates are not stored in the default ``app/Resources/views/``
 directory, use the :ref:`twig.paths <config-twig-paths>` configuration option to
 define your own templates directory (or directories):
 
-.. code-block:: yaml
+.. configuration-block::
 
-    # app/config/config.yml
-    twig:
-        # ...
-        paths: ["%kernel.root_dir%/../templates"]
+    .. code-block:: yaml
+
+        # app/config/config.yml
+        twig:
+            # ...
+            paths: ["%kernel.root_dir%/../templates"]
+
+    .. code-block:: xml
+
+        <!-- app/config/config.xml -->
+        <?xml version="1.0" ?>
+        <container xmlns="http://symfony.com/schema/dic/services"
+            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+            xmlns:twig="http://symfony.com/schema/dic/twig"
+            xsi:schemaLocation="http://symfony.com/schema/dic/services
+                http://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/twig
+                http://symfony.com/schema/dic/twig/twig-1.0.xsd">
+
+            <twig:config>
+                <twig:path>%kernel.root_dir%/../templates</twig:path>
+            </twig:config>
+        </container>
+
+    .. code-block:: php
+
+        // app/config/config.php
+        $container->loadFromExtension('twig', array(
+            'paths' => array(
+                '%kernel.root_dir%/../templates',
+            ),
+        ));
 
 .. _override-web-dir: