debug:dotenv command doesn't show environment variables

[CViniciusSDias]

Symfony version(s) affected

7.0.6

Description

If you have an environment variable set, the debug:dotenv command doesn't display it. It doesn't even display the values set in the .env files.

How to reproduce

On any symfony application, define a value in .env file. Let's use TEST as example:

TEST=value

Run php bin/console debug:dotenv and see that it's correctly displayed.

Now run TEST=other php bin/console debug:dotenv and see that it's not there anymore.

Possible Solution

No response

Additional Context

The command only shows what's in 'SYMFONY_DOTENV_VARS'. Since the value is now an env var, on Dotenv.php:192 it will skip the iteration and it will never be defined in $loadedVars nor in $_SERVER['SYMFONY_DOTENV_VARS'].

[javaDeveloperKid]

Please create a reproducer.

[CViniciusSDias]

Please create a reproducer.

As it's stated in the "steps to reproduce", it happens in any Symfony application and there is no code needed.
So I don't see much value in creating a repo with an empty Symfony project. 😅

[javaDeveloperKid]

😅

Please keep this kind of emojis for yourself. It's not a place to emphasize your personal feelings about other people comments. Let's focus on the problem.

Indeed the env var declared in .env file is missing from debug:dotenv when the same env var passed when executing script

However I'm not sure this is wrong. With debug:dotenv command you list env vars in use that were declared in .env files. TEST was declared in .env but was not used as the real env var is used.

--help is ambiguous about what a user should expect.
Description says: List all dotenv files with variables and values what can be interpreted as list all variables (with corresponding values) declared in all dotenv files.
However Help says The bin/console debug:dotenv command displays all the environment variables configured by dotenv what can be interpreted as it displays only variables configured by dotenv - TEST is not configured by dotenv because it already exists.

Let's wait what other contributors or Core Team members will say.

[nicolas-grekas]

I think this behavior is WTF.
It'd be nice to be able to list all dotenv vars, even overridden ones. Ideally we would show both the overridden and dotenv values.

[HMRDevil]

I'm sorry for my English.
A small comment. This behavior is also present in the 5.4 branch.
@nicolas-grekas Do you think it would look better this way?