Notices/Warnings should only print to Stderr, but are sent to both Stderr and Stdout #5809
Description
Bug Report
- Yes, I reviewed the contribution guidelines.
- Yes, more specifically, I reviewed the guidelines on how to write clear bug reports.
Describe the current, buggy behavior
PHP Notices and warnings are sent to both stderr and stdout, so they cannot be redirected or discarded when needed in scripts
$ wp config get table_prefix
PHP Notice: Foo. in phar:///usr/local/bin/wp/vendor/wp-cli/config-command/src/Config_Command.php(444) : eval()'d code on line 75
Notice: Foo. in phar:///usr/local/bin/wp/vendor/wp-cli/config-command/src/Config_Command.php(444) : eval()'d code on line 75
PHP Warning: Bar. in phar:///usr/local/bin/wp/vendor/wp-cli/config-command/src/Config_Command.php(444) : eval()'d code on line 76
Warning: Bar. in phar:///usr/local/bin/wp/vendor/wp-cli/config-command/src/Config_Command.php(444) : eval()'d code on line 76
wp_
Describe how other contributors can replicate this bug
I have a script to showcase/reproduce issues captured in this gist, which makes use of wp config to avoid requiring a database, but the behavior can be reproduced with most other commands like wp site list as well.
Describe what you expect as the correct outcome
Errors/Warnings/Notices are only sent to stderr so that they can be captured, redirected, or discarded with shell redirections. Errors printing to stdout means capturing the output of a command is hard where you may not control all the code (i.e. running plugins with deprecated php syntax in PHP 8.2) and/or do not want to re-configure WP_DEBUG and its related constants.
Let us know what environment you are running this on
OS: Darwin 21.6.0 Darwin Kernel Version 21.6.0: Sun Nov 6 23:31:13 PST 2022; root:xnu-8020.240.14~1/RELEASE_ARM64_T6000 arm64
Shell: /bin/zsh
PHP binary: /opt/homebrew/Cellar/php/8.2.3/bin/php
PHP version: 8.2.3
php.ini used: /opt/homebrew/etc/php/8.2/php.ini
MySQL binary: /opt/homebrew/bin/mysql
MySQL version: mysql Ver 15.1 Distrib 10.11.2-MariaDB, for osx10.17 (arm64) using EditLine wrapper
SQL modes: STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
WP-CLI root dir: phar://wp-cli.phar/vendor/wp-cli/wp-cli
WP-CLI vendor dir: phar://wp-cli.phar/vendor
WP_CLI phar path: /Users/philtyler/pantheon/projects/wpcli-repro
WP-CLI packages dir:
WP-CLI cache dir: /Users/philtyler/.wp-cli/cache
WP-CLI global config:
WP-CLI project config:
WP-CLI version: 2.8.1