I am learning Symfony2, and if i refer to The Symfony CookBook
(http://symfony.com/doc/current/cookbook/configuration/external_parameters.html) they tell us to put sensitive options (like database password and user) outside of Symfony.
It is safe to put that informations on $_SERVER
?
SetEnv SYMFONY__DATABASE__USER user
SetEnv SYMFONY__DATABASE__PASSWORD password
If yes (or no), why?
Thanks you in advance