Added PHP 5.6, 5.5 and HHVM to travis.yml

[photodude]

@Nyholm I would suggest making HHVM an allowed failure until the testing issues can be resolved.

You can also consider being LTS specific with HHVM as of may 2016

HHVM also has a php7 mode that can be tested against like this

- php: hhvm
      sudo: true
      dist: trusty
      group: edge # until the next update
      env: HHVMPHP7="no"
    - php: hhvm
      sudo: true
      dist: trusty
      group: edge # until the next update
      env: HHVMPHP7="yes
  allow_failures:
    - php: hhvm
before_script:
  - if [[ $HHVMPHP7 == "yes" ]]; then echo hhvm.php7.all=1 >> /etc/hhvm/php.ini; fi

Additionally, I would now also add PHP7.1 as an allowed failure

[Nyholm]

Im not too sure about the 'dist' property. I added more PHP versions and allow failures for hhvm

[photodude]

The 'dist' property just specifies Trusty as the image rather than precise (the specific ubuntu image used by travis ci)

The Trusty image is newer and has more testing options.

[photodude]

I suggest the following

# Forces new Travis-CI Infrastructure for faster builds
sudo: false

language: php

matrix:
  fast_finish: true
  include:
    - php: 5.3
    - php: 5.4
    - php: 5.5
    - php: 5.6
    - php: 7.0
    - php: 7.1
    - php: hhvm
      sudo: true
      dist: trusty
      group: edge # until the next update
      env: HHVMPHP7="no"
    - php: hhvm
      sudo: true
      dist: trusty
      group: edge # until the next update
      env: HHVMPHP7="yes
  allow_failures:
    - php: hhvm

before_script:
  - if [[ $HHVMPHP7 == "yes" ]]; then echo hhvm.php7.all=1 >> /etc/hhvm/php.ini; fi

script:
  - phpunit

without the env: variable HHVM will not run in php7 mode

[Nyholm]

That is an invalid config. https://lint.travis-ci.org/

[photodude]

@Nyholm Check the spacing, I probably copied too many spaces when I cut and pasted from several things to get that config.

I replaced it with the space indenting fixed, should work now

[photodude]

@Nyholm can you try the updated change?