Symfony Autowiring

When to use

• The user needs to inject a specific value or service into a constructor argument with the
• The user hits a "cannot autowire" or ambiguous-service error and needs to resolve it.
• The user wants Symfony to resolve a service's constructor dependencies automatically by type.

When NOT to use

• Do not apply Symfony autowiring rules to Laravel's automatic resolution or other DI containers.
• Do not expect autowiring to supply plain scalars, arrays, or env values — those need an explicit bind or

Core guidance