Merge pull request #1447 from richardmiller/removing_moved_container_dumping_section

Removing moved container dumping section

Author: weaverryan

components/dependency_injection/introduction.rst

@@ -279,81 +279,3 @@ The ``newsletter_manager`` and ``mailer`` services can be set up using config fi
         $container->register('newsletter_manager', 'NewsletterManager')
            ->addMethodCall('setMailer', new Reference('mailer');
 
-Dumping the Configuration for Performance
------------------------------------------
-
-Using configuration files to manage the service container can be much easier
-to understand than using PHP once there are a lot of services. This ease comes
-at a price though when it comes to performance as the config files need to be
-parsed and the PHP configuration built from them. You can have the best of both
-worlds though by using configuration files and then dumping and caching the resulting
-configuration. The ``PhpDumper`` makes dumping the compiled container easy::
-
-    use Symfony\Component\DependencyInjection\ContainerBuilder;
-    use Symfony\Component\Config\FileLocator;
-    use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
-    use Symfony\Component\DependencyInjection\Dumper\PhpDumper
-
-    $container = new ContainerBuilder();
-    $loader = new XmlFileLoader($container, new FileLocator(__DIR__));
-    $loader->load('services.xml');
-
-    $file = __DIR__ .'/cache/container.php';
-
-    if (file_exists($file)) {
-        require_once $file;
-        $container = new ProjectServiceContiner();
-    } else {
-        $container = new ContainerBuilder();
-        $loader = new XmlFileLoader($container, new FileLocator(__DIR__));
-        $loader->load('services.xml');
-
-        $dumper = new PhpDumper($container);
-        file_put_contents($file, $dumper->dump());
-    }
-
-``ProjectServiceContiner`` is the default name given to the dumped container
-class, you can change this though this with the ``class`` option when you dump
-it::
-
-    // ...
-    $file = __DIR__ .'/cache/container.php';
-
-    if (file_exists($file)) {
-        require_once $file;
-        $container = new MyCachedContainer();
-    } else {
-        $container = new ContainerBuilder();
-        $loader = new XmlFileLoader($container, new FileLocator(__DIR__));
-        $loader->load('services.xml');
-
-        $dumper = new PhpDumper($container);
-        file_put_contents($file, $dumper->dump(array('class' => 'MyCachedContainer')));
-    }
-
-You will now get the speed of the PHP configured container with the ease of using
-configuration files. In the above example you will need to delete the cached
-container file whenever you make any changes. Adding a check for a variable that
-determines if you are in debug mode allows you to keep the speed of the cached
-container in production but getting an up to date configuration whilst developing
-your application::
-
-    // ...
-
-    // set $isDebug based on something in your project
-
-    $file = __DIR__ .'/cache/container.php';
-
-    if (!$isDebug && file_exists($file)) {
-        require_once $file;
-        $container = new MyCachedContainer();
-    } else {
-        $container = new ContainerBuilder();
-        $loader = new XmlFileLoader($container, new FileLocator(__DIR__));
-        $loader->load('services.xml');
-
-        if(!$isDebug) {
-   	     $dumper = new PhpDumper($container);
-            file_put_contents($file, $dumper->dump(array('class' => 'MyCachedContainer')));
-        }
-    }