php-symfonyHow to use dependency injection in Symfony with PHP?

Dependency Injection (DI) is a design pattern used to create loosely coupled components in a system. It is a powerful tool for managing class dependencies in Symfony with PHP.

To use DI in Symfony, you need to create a service container and register services in it. Services are objects that can be used by other objects in the system.

Example code

// Create a service container
$container = new Symfony\Component\DependencyInjection\ContainerBuilder();

// Register a service
$container->register('my_service', 'My\Service\Class');

// Get the service
$myService = $container->get('my_service');

Output example

My\Service\Class

Code explanation

• $container = new Symfony\Component\DependencyInjection\ContainerBuilder(); - creates a service container.
• $container->register('my_service', 'My\Service\Class'); - registers a service in the container.
• $myService = $container->get('my_service'); - gets the service from the container.

Helpful links

• Symfony Dependency Injection Component
• Dependency Injection in Symfony

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