How to Debug the Service Container & List Services

You can find out what services are registered with the container using the console. To show all services (public and private) and their PHP classes, run:

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        $ php bin/console debug:container

# add this option to display "hidden services" too (those whose ID starts with a dot)
$ php bin/console debug:container --show-hidden
    

To see a list of all of the available types that can be used for autowiring, run:

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        $ php bin/console debug:autowiring
    

Debugging Service Tags

Run the following command to find out what services are tagged with a specific tag:

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        $ php bin/console debug:container --tag=kernel.event_listener
    

Partial search is also available:

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        $ php bin/console debug:container --tag=kernel

Select one of the following tags to display its information:
 [0] kernel.event_listener
 [1] kernel.event_subscriber
 [2] kernel.reset
 [3] kernel.cache_warmer
 [4] kernel.locale_aware
 [5] kernel.fragment_renderer
 [6] kernel.cache_clearer
    

Detailed Info about a Single Service

You can get more detailed information about a particular service by specifying its id:

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        $ php bin/console debug:container App\Service\Mailer
    

7.3

Starting in Symfony 7.3, this command displays the service arguments by default. In earlier Symfony versions, you needed to use the --show-arguments option, which is now deprecated.

This work, including the code samples, is licensed under a Creative Commons BY-SA 3.0 license.

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