To create reusable bundles in Symfony, follow these steps:
Create a new directory in the src/ directory of your Symfony project for your bundle. For example, src/YourBundleName.
Create a new PHP class in this directory that extends Symfony\Component\HttpKernel\Bundle\Bundle class. This class should be your bundle's main class and will act as an entry point for your bundle.
Create a Resources/config directory in your bundle directory, and add a services.yml file to define the services that your bundle will provide.
Create a DependencyInjection directory in your bundle directory, and add a YourBundleNameExtension.php file to load your bundle's configuration.
Create a Controller, Entity, Service, or any other directory structure that makes sense for your bundle's functionality.
Add any necessary controllers, entities, services, etc. to the appropriate directories within your bundle.
Update the registerBundles() method in your AppKernel.php file to include your bundle. This will make your bundle available within your Symfony application.
You can now use your bundle in any Symfony project by including it in the composer.json file of your project and running composer update.
By following these steps, you can create reusable bundles in Symfony that encapsulate functionality and can be easily integrated into multiple Symfony projects.