Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

With Xdebug enabled but no listener to connect to, the command used to check the PHP version and SAPI "fails".

Because when Xdebug cannot connect, the output looks like this:

Xdebug: [Step Debug] Could not connect to debugging client. Tried: …:9003 (fallback through xdebug.client_host/xdebug.client_port).
{"sapi":"cli","version":"8.2.27"}

Note the expected JSON is now in the second line of the output (instead of $output[0]), so the check fails, even though $result is 0.

Expected Behavior

The Xdebug output is a warning, and, well hard to suppress, unfortunately. But it should not stop execution of the code… especially since warming up Flow from the CLI works just fine and also subsequent browser requests do work.

Steps To Reproduce

1. Activate Xdebug, set xdebug.start_with_request=yes (as is default in DDEV)
2. Do not listen for debug connections
3. Call Flow from a browser, with empty Flow caches

Environment

- Flow: 8.3
- PHP: 8.3
- Xdebug: 3

Anything else?

• A way to solve this would be to not redirect stderr to stdout? No, that Xdebug output is not sent to stderr.
• Unset the subRequestEnvironmentVariables to get rid of XDEBUG_CONFIG? No, with xdebug.start_with_request=yes that doesn't help.