Merge pull request #41 from tfrommen/php81-qa #1

	name: PHP Quality Assurance
	on:
	push:
	# Allow manually triggering the workflow.
	workflow_dispatch:

	# Cancels all previous workflow runs for the same branch that have not yet completed.
	concurrency:
	# The concurrency group contains the workflow name and the branch name.
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	qa:
	runs-on: ubuntu-latest
	if: "!contains(github.event.head_commit.message, 'ci skip')"
	strategy:
	fail-fast: true
	matrix:
	php-versions: ['5.5', '5.6']

	steps:
	- uses: actions/checkout@v4

	- name: Setup PHP
	uses: shivammathur/setup-php@v2
	with:
	php-version: ${{ matrix.php-versions }}
	ini-values: zend.assertions=1, error_reporting=-1, display_errors=On
	coverage: none
	tools: parallel-lint
	env:
	fail-fast: true

	- name: Check syntax error in sources
	run: parallel-lint ./src/ ./tests/

	- name: Install dependencies
	uses: "ramsey/composer-install@v2"
	with:
	# Bust the cache at least once a month - output format: YYYY-MM.
	custom-cache-suffix: $(date -u "+%Y-%m")

	- name: Check cross-version PHP compatibility
	if: ${{ matrix.php-versions == '5.6' }}
	run: composer phpcompat

	- name: Run unit tests
	run: ./vendor/bin/phpunit

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