language: php

# At present the only jobs to run are a php lint.
# Run this against all supported versions of PHP.
jobs:
  include:
    # Bionic supports PHP 7.1, 7.2, 7.3, and 7.4.
    # https://docs.travis-ci.com/user/reference/bionic/#php-support
    - php: 7.4
      dist: bionic
    - php: 7.3
      dist: bionic
    - php: 7.2
      dist: bionic
    - php: 7.1
      dist: bionic

    # Xenial was the last Travis distribution to support PHP 5.6, and 7.0.
    # https://docs.travis-ci.com/user/reference/xenial/#php-support
    - php: 7.0
      dist: xenial
    - php: 5.6
      dist: xenial

    # Trusty was the last Travis distribution to support PHP 5.4, and 5.5.
    # https://docs.travis-ci.com/user/languages/php/#php-54x---55x-support-is-available-on-precise-and-trusty-only
    - php: 5.5
      dist: trusty
    - php: 5.4
      dist: trusty


    # Precise was the last Travis distribution to support PHP 5.2, and 5.3.
    # https://docs.travis-ci.com/user/languages/php/#php-52x---53x-support-is-available-on-precise-only
    - php: 5.3
      dist: precise

script:
  # Run a php lint across all PHP files.
  - find . -type f -name '*\.php' -print0 | xargs -0 -n1 php -l