.travis.yml

language: php

php:
  - 5.6
  - 7.0
  - 7.1
  - 7.2
  - 7.3
  - nightly

cache:
  directories:
    - vendor

sudo: false

env:
  matrix:
    - COMPOSER_PREFER="--prefer-stable"
    - COMPOSER_PREFER="--prefer-lowest"

matrix:
  allow_failures:
    - php: nightly
    - php: 7.4snapshot
    - php: 5.6
  exclude:
    - php: 7.0
      env: COMPOSER_PREFER="--prefer-lowest"
    - php: 7.1
      env: COMPOSER_PREFER="--prefer-lowest"
    - php: 7.2
      env: COMPOSER_PREFER="--prefer-lowest"
    - php: 7.3
      env: COMPOSER_PREFER="--prefer-lowest"
    - php: 7.1
      env: COMPOSER_PREFER="--prefer-stable"
    - php: 7.2
      env: COMPOSER_PREFER="--prefer-stable"
    - php: 7.3
      env: COMPOSER_PREFER="--prefer-stable"
    - php: 7.4snapshot
      env: COMPOSER_PREFER="--prefer-lowest"
    - php: nightly
      env: COMPOSER_PREFER="--prefer-lowest"

script:
  - composer update -o $COMPOSER_PREFER
  - vendor/bin/atoum