feat: PHPUnit を使わずにPHP5.4～8.0のテストをサポート #22

	name: CI Legacy PHP
	on: [push, pull_request]

	permissions:
	contents: read

	jobs:
	tests-legacy:
	name: Tests PHP ${{ matrix.php-version }}
	timeout-minutes: 10
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Setup PHP
	uses: shivammathur/setup-php@v2
	with:
	php-version: ${{ matrix.php-version }}
	extensions: bcmath
	tools: composer:v1 # Use Composer v1 for better PHP 5.x compatibility

	- name: Install dependencies
	run: \|
	# Remove dev dependencies first to avoid conflicts
	composer remove phpunit/phpunit squizlabs/php_codesniffer --dev --no-update

	# Force phpseclib 2.x for older PHP versions (fetch from GitHub for Composer v1 EOL workaround)
	if [[ "${{ matrix.php-version }}" < "7.2" ]]; then
	# Use GitHub token to avoid rate limiting and authentication issues
	composer config -g github-oauth.github.com ${{ secrets.GITHUB_TOKEN }}
	# Use HTTPS URL with token authentication
	composer config repositories.phpseclib vcs https://oauth2:${{ secrets.GITHUB_TOKEN }}@github.com/phpseclib/phpseclib.git
	composer require phpseclib/phpseclib:^2.0 --no-update
	fi
	composer install --no-interaction --prefer-dist --no-dev

	- name: Run tests with simple test runner
	run: php tests/simple-test-runner.php

	- name: Show PHP version
	run: php -v

	strategy:
	fail-fast: false
	matrix:
	php-version: ['5.4', '5.5', '5.6', '7.0', '7.1', '7.2', '7.3', '7.4', '8.0']

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