Travis CI is a free continuous integration service for open source projects that automatically runs builds and tests after code commits. It integrates with GitHub and allows customizing builds through a .travis.yml file. This file specifies the language, versions, environment variables, install and test scripts, notifications, and more. Travis CI supports many languages including PHP and runs builds on Linux environments across different versions in parallel. It provides notifications, encryption, browser testing through services like Sauce Labs, and continuous deployment options.

2. Who Am I?
Developer/Evangelist at LaunchKey
Founder/Co-Organizer of Las Vegas PHP UG
Co-Organizer of Las Vegas Developer UG
#vegastech enthusiast

3. Continuous Integration
As referred to in Wikipedia as a later elaboration of
continuous integration: build servers, which
automatically run the unit tests periodically or even after
every commit and report the results to the developer.

4. Travis CI
Free for open source software projects
Monthly rates for concurrent jobs for private projects
Direct integration with GitHub
Extremely customizable
Simple to use and configure

5. Build Configuration
Project configuration determines when builds are run
.travis.yml file contains build configuration
Matrix configuration will launch concurrent jobs
Builds can be triggered off of branches and pull
requests

6. Build Sections
Language
Versions
Environment
Script with hooks
Install with hooks
Service
Matrix
Notification

7. Language
Many languages supported
Specify PHP with:
language: php

8. Versions
Specify the versions of PHP to test against:
php:
- 5.4
- 5.5
- 5.6
- hhvm

9. Environment
Used to create multiple environments for testing via
environment variables:
env:
- SYMFONY_VERSION="2.0.*" DB=mysql
- SYMFONY_VERSION="dev-master" DB=mysql

10. Install with Hooks
Prepares environment
before_install:
- sudo apt-get update > /dev/null
install:
- composer --prefer-source --dev install

11. Script
Runs the tests
before_script:
- composer require
"guzzle/guzzle:${GUZZLE_VERSION}" --
prefer-source
script: bin/phpunit

12. Service
Data stores, messaging brokers, etc
Supports a wide array of ready to use services
services:
- rabbitmq
- memcached

13. Matrix
The build matrix allows for specifying
inclusion/exclusion of version and environment
combinations. Useful for known unsupported
combinations.
Provides for allowing failure in build combinations
that will not cause the entire build to fail. Useful for
testing non-production combinations.

14. Matrix Example
matrix:
allow_failures:
- php: hhvm
- env: GUZZLE_VERSION=dev-master

15. Notifications
Email notifications
IRC notification
Campfire notification
Flowdock notification
HipChat notification
Sqwiggle
notifications
Slack notifications
Webhook notification

16. Encryption
Encryption of special data is possible
Ruby CLI client to encrypt the data
Specify that data is encrypted in .travis.tml by
prepending data encrypted by client with “secure: “
Files can also be encrypted

17. Browser Testing
Supports XVFP. PhantomJS, and Sauce Labs
addons:
sauce_connect:
username: “username"
access_key: “access key"

18. Continuous Deployment
after_success hook can be used to deploy after
successful build.
Supports multiple providers as well as custom
deploy:
provider: heroku
api_key: "YOUR API KEY"

19. https://www.slideshare.net/AdamEnglander/travis-ci
https://github.com/LaunchKey/launchkey-
php/blob/master/.travis.yml
https://travis-ci.org/LaunchKey/launchkey-php
@adam_englander
#launchkey on freenode.net
#vegastech on freenode.net
adam@launchkey.com