language: php
php:
  - 5.5
  - 5.6
  - 7.0
  - 7.1
  - 7.2
  - nightly
  - hhvm
  - hhvm-nightly

matrix:
  allow_failures:
    - php: 7.1
    - php: 7.2
    - php: nightly
    - php: hhvm
    - php: hhvm-nightly

before_script:
  - composer selfupdate
  - composer install --prefer-dist -o