Update php version #30

	name: CI

	on: [ push, pull_request ]

	jobs:
	build:
	runs-on: ubuntu-latest

	continue-on-error: ${{ matrix.env.experimental == true }}
	strategy:
	fail-fast: false
	matrix:
	env:
	- { php: 8.1 }

	env: ${{ matrix.env }}

	steps:
	- name: Checkout
	uses: actions/checkout@v2

	- name: Setup PHP
	uses: shivammathur/setup-php@v2
	with:
	php-version: ${{ matrix.env.php }}
	tools: composer

	# composer
	- name: Update Composer
	run: \|
	sudo composer self-update
	composer --version
	- name: Validate composer.json and composer.lock
	run: composer validate

	- name: Cache dependencies
	uses: actions/cache@v1
	with:
	path: ~/.composer/cache
	key: dependencies-composer-${{ hashFiles('composer.json') }}

	- name: Install dependencies
	run: composer install

	- name: Check coding style
	run: composer lint

Provide feedback