A simple solution to use headers according to PSR-7. You can install this library, if you need to use headers
in your project. This implementation can be used in HTTP requests and responses.
You can find the full documentation on the website:
https://quillstack.org/headers
Run tests using a command:
phpdbg -qrr ./vendor/bin/unit-tests
$ docker-compose up -d
$ docker exec -w /var/www/html -it quillstack_header-bag sh