Modular Programming with PHP 7

Configuring Symfony

In order to keep up with modern demands, today's frameworks and applications require a flexible configuration system. Symfony fulfils this role nicely through its robust configuration files and environments concept.

The default Symfony configuration file config.yml is located under the app/config/ directory, with (partial) content sectioned as follows:

imports:
  - { resource: parameters.yml }
  - { resource: security.yml }
  - { resource: services.yml }

framework:
…

# Twig Configuration
twig:
…

# Doctrine Configuration
doctrine:
…

# Swiftmailer Configuration
swiftmailer:
…

The top-level entries like framework, twig, doctrine, and swiftmailer define the configuration of an individual bundle.

Optionally, the configuration file can be ...