Example GitHub Actions workflow

# https://help.github.com/en/categories/automating-your-workflow-with-github-actions

name: "Tests"

on:
  pull_request:

jobs:
  tests-matrix:
    name: "Determine tests matrix"
    runs-on: ubuntu-latest
    timeout-minutes: 10

    steps:
      - name: "Checkout"
        uses: actions/checkout@v4

      - name: "Install PHP"
        uses: "shivammathur/setup-php@v2"
        with:
          coverage: "none"
          php-version: "8.3"
          
      - name: "Install dependencies"
        run: "composer install --no-interaction --no-progress"

      - name: "Segment PHPUnit test-suite"
        id: set-matrix
        uses: staabm/phpunit-github-action-matrix@main
        with:
          phpunit-path: "vendor/bin/phpunit"
          strategy: "groups"
          
    outputs:
      phpunit-action-matrix-json: ${{ steps.set-matrix.outputs.phpunit-action-matrix-json }}

  run-test-segment:
    needs: tests-matrix

    name: "Run PHPUnit segment"
    runs-on: ubuntu-latest
    timeout-minutes: 60

    strategy:
      fail-fast: false
      matrix:
        phpunit-script: "${{fromJson(needs.tests-levels-matrix.outputs.phpunit-action-matrix-json)}}"

    steps:
      - name: "Checkout"
        uses: actions/checkout@v4

      - name: "Install PHP"
        uses: "shivammathur/setup-php@v2"
        with:
          coverage: "none"
          php-version: "8.3"

      - name: "Install dependencies"
        run: "composer install --no-interaction --no-progress"

      - name: "Tests"
        run: "${{ matrix.phpunit-script }}"