Please document new PHP version requirements

[greg-1-anderson]

The System Requirements section of the Composer documentation still says that PHP 5.3.2+ is supported. It appears that Composer 2.3.0 will only support PHP 7.2+, per #10343. Please update the documentation so that users still running on EOL versions of PHP know clearly what is supported.

[Seldaek]

Yup we need to update a bunch of places I am sure. Thanks for the reminder. It's 7.2.5 requirement, otherwise nothing much changed I believe. People packaging with older PHP should use the 2.2.x LTS series.

[andypost]

Looks like duplicate of #10340

[RdeWilde]

Does composer 2.2.5 support PHP 8.1? Any summary for the constraints per version?

[GromNaN]

Summary is here: #10340

I assume composer 2.2.x will support all new PHP versions until the end of the LTS.

[Seldaek]

Composer 2.2 supports PHP 8.1 yes, but it may not support 8.2 depending on the effort required. If you are using 8.2 you anyway should use Composer 2.3+ IMO.

[Seldaek]

Updated things in #10562 and also listing version support for the manual download links on https://getcomposer.org/download/

The bottom line though is if you're using the installer or self-update things will just work regardless of PHP version.