Support php-version: preinstalled

[SystemKeeper]

Describe the feature
Most runners (be it GitHub-Hosted or Self-Hosted) have php versions pre-installed. For some workflows the performance is more important than the exact php version. So when targeting ubuntu-24.04 it makes sense to use PHP 8.3, while on ubuntu-22.04 it makes sense to use PHP 8.1. Therefore I was thinking if adding something like php-version: preinstalled or php-version: highest-preinstalled would make sense and setup-php would automatically choose the (highest) version that's already inside the image?

Version

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

Underlying issue
Reduce bandwidth consumption and time to setup.

Describe alternatives
Manually adjust the workflows.

Additional context

Are you willing to submit a PR?
Generally yes, although no idea where to start.

[shivammathur]

Added in da72908

[SystemKeeper]

Awesome ❤️

Quick question, the linked commit says pre-installed in the docs, but checks for pre in the scripts?

[shivammathur]

It should accept pre, pre-installed and preinstalled.

[SystemKeeper]

But the check is only for "pre":

setup-php/src/scripts/unix.sh

Line 189 in 775fa76

if [ "$version" = "pre" ]; then

Or am I missing something?

[shivammathur]

It only passes first 3 characters to the scripts.

setup-php/src/utils.ts

Lines 61 to 74 in 775fa76

	switch (true) {
	case /^(latest|lowest|highest|nightly|\d+\.x)$/.test(version):
	return JSON.parse((await fetch.fetch(await getManifestURL()))['data'])[
	version
	];
	default:
	switch (true) {
	case version.length > 1:
	return version.slice(0, 3);
	default:
	return version + '.0';
	}
	}
	}