It helps you to know which services are instanciated, removed, public and list container parameters.
You have access to Container cache statistics: files count, count code lines and cache size.
With Symfony, a new profiler tab will appear:
If you want to use it with
symfony/dependency-injection ^3.4, use steevanb/symfony-container-introspection ^1.0.
composer require --dev steevanb/symfony-container-introspection ^1.1.1
If you use Symfony (and not just
symfony/dependency-injection), you can add
ContainerIntrospectionBundle to your Kernel:
# config/bundles.php <?php return [ steevanb\ContainerIntrospection\Bridge\ContainerIntrospectionBundle\ContainerIntrospectionBundle::class => ['dev' => true] ];