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
    

New in version 4.1

Hidden services and the --show-hidden option were introduced in Symfony 4.1.

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
    

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'

# to show the service arguments:
$ php bin/console debug:container 'App\Service\Mailer' --show-arguments
    

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