PHP CI with GitHub Actions

When to use

• The user wants to run their test suite against several PHP versions in a build matrix.
• The user wants a GitHub Actions workflow that installs, tests, and statically analyzes a PHP project on every push or pull request.
• The user wants to cache Composer dependencies and parallelize steps to make a slow PHP CI run faster.

When NOT to use

• Do not apply this skill's GitHub Actions YAML when the project's CI system is GitLab CI, Jenkins, or CircleCI.
• Do not use this skill for zero-downtime release mechanics or rollback logic; those belong to the deployment skill.

Core guidance