WP CLI ignores current project' PHP version

[zzap]

Bug Report

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• Yes, more specifically, I reviewed the guidelines on how to write clear bug reports.

In my local setup I use different PHP versions per project and can switch versions inside the project but default PHP version for my system is 8.0.0RC3.

However, when I'm inside the project, WP CLI ignores its specified PHP version and use the default one.

Here is PHP info for one of projects:

And here is WP CLI info in the root of that project.

$ wp cli info
OS:     Linux 5.4.0-52-generic #57-Ubuntu SMP Thu Oct 15 10:57:00 UTC 2020 x86_64
Shell:  /bin/bash
PHP binary:     /usr/bin/php8.0
PHP version:    8.0.0RC3
php.ini used:   /etc/php/8.0/cli/php.ini
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:       /home/milana/www/developerka.loc
WP-CLI packages dir:    /home/milana/.wp-cli/packages/
WP-CLI global config:   /home/milana/.wp-cli/config.yml
WP-CLI project config:
WP-CLI version: 2.4.0

Is this expected behavior for WP CLI or is it a bug?

[thefrosty]

PHP versions can differ from source to command line (CLI Interpreter).

[zzap]

Yes, I ended up removing PHP8.0 from my system. It's now on 7.4.12 and WP-CLI works as expected.

[thefrosty]

If you manage PHP locally via brew like I do, check out brew-php-switcher

[schlessera]

Indeed, often times switching PHP version only switches the version used via the web server. The version used for WP-CLI is the cli SAPI that happens to be found first in the environment's $PATH variable. You can adapt this via different mechanisms, but they all involve doing a change the CLI environment level.

This is expected and just the way PHP CLI tools work, so closing this for now. Feel free to ping me in #cli on Slack if you need further assistance.