From http://symfony.com/doc/current/cookbook/configuration/environments.html#creating-a-new-environment
# 'dev' environment and debug enabled
$ php bin/console command_name
# 'prod' environment (debug is always disabled for 'prod')
$ php bin/console command_name --env=prod
# 'test' environment and debug disabled
$ php bin/console command_name --env=test --no-debug