pick up PHP version from composer.json

[watarukura]

Describe the feature

for example actions/setup-go@v3, pick up Golang version from go.mod

steps:
  - uses: actions/checkout@v3
  - uses: actions/setup-go@v3
    with:
      go-version-file: "go.mod"
  - run: go version

I want to pick up PHP version from composer.json, like this

steps:
  - uses: actions/checkout@v3
  - uses: shivammathur/setup-php@v2
    with:
      php-version-file: 'composer.json'
  - run: php --version

composer.json like this

{
  "name": "foo/bar",
  "version": "0.0.1",
  "license": "MIT",
  "require": {
    "php": "^8.0|^8.1"
  }
}

Version

• [x] I have checked releases, and the feature is missing in the latest patch version of v2.

Underlying issue

When PHP version up, I must do same change to composer.json and GHA workflow yaml files.

Describe alternatives

Additional context

Are you willing to submit a PR?

I can try!

[shivammathur]

@watarukura

go.mod specifies the exact version, but it can be a range in composer.json.

So it will need another input say php-version-preference which takes an input highest or lowest, or minimum or maximum to resolve the range to an exact version. It can default to the highest version similar to how composer works.

If you would like to work on a PR to add this, please go ahead.

[stevelacey]

Similar actions like setup-node and setup-python have gone with pulling the version from a standalone file, that'd be great to see here rather than parsing out from composer.json which, as above, could be a range, and confusing.

In addition to allowing the file to be specified via php-version-file, it'd also be good if there was a default file used if version has not been specified any other way e.g. .php-version or .phpenv-version.

Fwiw setup-node supports .nvmrc but does not default to it (and that's kinda annoying). The setup-python action uses .python-version if neither python-version or python-version-file is supplied and that is 👌🏼 when you're using the language across a few actions/steps and simply want consistency.

[TomAdam]

Symfony CLI uses .php-version. Seems as good a choice as any. https://symfony.com/doc/current/setup/symfony_server.html#selecting-a-different-php-version