Improve README documentation #23

	name: PHP
	on: [push, pull_request]
	jobs:
	php-checking:
	name: Run php checking
	runs-on: ubuntu-latest
	strategy:
	matrix:
	php: [ '8.1', '8.2']
	fail-fast: false
	steps:
	- name: Setup PHP
	uses: shivammathur/setup-php@v2
	with:
	php-version: ${{ matrix.php }}
	- uses: actions/checkout@v2

	- name: Get Composer Cache Directory
	id: composer-cache
	run: \|
	echo "::set-output name=dir::$(composer config cache-files-dir)"

	- name: Cache Composer Directory
	uses: actions/cache@v2
	with:
	path: ${{ steps.composer-cache.outputs.dir }}
	key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
	restore-keys: \|
	${{ runner.os }}-composer-

	- name: Composer Install
	run: composer install --ansi --prefer-dist --no-interaction --no-progress

	- name: Run all checking
	run: composer github-ci

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