Add the ability to use fallback value for environment variables

[DnD-Sony]

Use case
Sometime the environment variables in .env files could be different between local, staging/production on multiple project in our Web Agency.

Describe the solution you'd like
We would like to use the same mechanic provided by Symfony
https://symfony.com/doc/current/configuration/env_var_processors.html#built-in-environment-variable-processors
(search the part related for env(default:fallback_param:BAR))

Describe alternatives you've considered
We added some modifications to this class \Smile\GdprDump\Config\Compiler\Processor\EnvVarProcessor and we would like to submit a Pull Request

The setting now can looks like this

database:
  host: '%env(default:DB_HOST:MYSQL_HOST)%'
  user: '%env(default:DB_USER:MYSQL_USER)%'
  password: '%env(default:DB_PASSWORD:MYSQL_PASSWORD)%'
  name: '%env(default:DB_NAME:MYSQL_DB)%'

[DnD-Sony]

Hi @guvra , do you think we can have an update on this ?

[guvra]

Hi, I plan to add the following options to the command-line: --database, --host, --port, --user, --password

It would allow to override values for a specific environment, for example:

• gdpr-dump.phar config.yaml --host=myhost
• gdpr-dump.phar config.yaml --host=$MYSQL_HOST

It would probably solve your use case as well, can you confirm this?

[DnD-Sony]

Hi, yes I think it would be really useful to have these options !
Thanks!