Enable logging in the Symfony production environment

To enable symfony logging edit the file apps/frontend/config/settings.yml

prod:   .settings:     logging_enabled:        on

edit apps/frontend/config/factories.yml

prod:   logger:     class: sfAggregateLogger     param:       level: debug Hoặc thử với cấu hình sau: logger:   class: sfAggregateLogger   param:     level: debug     loggers:       sf_web_debug:         class: sfWebDebugLogger         param:         level: debug         condition: %SF_WEB_DEBUG%         xdebug_logging: true         web_debug_class: sfWebDebug       sf_file_debug:         class: sfFileLogger         param:           level: debug           file: %SF_LOG_DIR%/%SF_APP%_%SF_ENVIRONMENT%.log

Clear your cache and logging should now be enabled for the Symfony production environment.

Refer:

1. http://www.deanoj.co.uk/web-development/symfony/enable-logging-in-the-symfony-production-environment/

2. http://sakrawebstudio.blogspot.fr/2011/01/enable-frontend-logging-in-production.html