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Composing Project Dependencies
- 1. Composing Project Dependencies Derek Gallo @derekgallo http://github.com/drock
- 2. Problem •Projects use many libs or frameworks •Most libs have several dependencies •Different projects need different versions
- 3. An Example Project A Project B PHPUnit PHPUnit 3.7 3.6 Symfony PHPUnit Symfony PHPUnit YAML Mocks ... YAML Mocks ... 2.2 1.3 1.02 1.1
- 4. Pear Project A Project B Single shared dependency PHPUnit No autoloading 3.7 Not part of build Symfony PHPUnit YAML Mocks ... 2.2 1.3
- 5. Submodules Project A Project B Symfony PHPUnit Symfony PHPUnit PHPUnit PHPUnit YAML Mocks YAML Mocks 3.7 3.6 2.2 1.3 1.02 1.1 No autoloading No dependency management
- 6. Composer! Project A Project B PHPUnit PHPUnit 3.7 3.6 Symfony PHPUnit Symfony PHPUnit YAML Mocks ... YAML Mocks ... 2.2 1.3 1.02 1.1
- 7. Composer! •Autoloading • Dependency Management • Per project dependencies • Part of build
- 8. Composer is a tool for dependency management in PHP. It allows you to declare the dependent libraries your project needs and it will install them in your project for you.
- 9. Installation •Locally • curl -sS https://getcomposer.org/ installer | php •Globally • sudo mv composer.phar /usr/local/bin/ composer • composer selfupdate <- Do regularly
- 10. Silex Sample •Create empty project folder • Create composer.json
- 11. Silex Sample
- 12. Silex Sample • >composer install
- 13. Silex Sample • include autoloader • write controller
- 14. Silex Sample • add monolog
- 15. Silex Sample • >composer update
- 16. Silex Sample • add logging code
- 17. Defining Dependencies Vendor/Package Version Stability Requirements
- 18. Installing Dependencies • >composer install • downloads dependencies to vendor folder •generates autoloader
- 19. Using Dependencies •PSR-0 - Standards defining naming conventions for autoloading. •Use composer generated autoloader
- 20. Updating Dependencies •>composer update • upgrades packages to latest version based on rules in composer.json
- 21. Install vs Update •composer.lock •tracks versions of dependencies used •commit it •install-looks for composer.lock then composer.json •update-looks straight at composer.json and updates composer.lock
- 22. Working in a Team •Elect a dependency manager • manages and commits composer files •add vendor folder to git/svn ignore
- 23. Finding Packages •Packagist • >composer search ... • Github • look for composer.json
- 24. Older Packages Define a package repository in your composer.json Specify locations of sources Instruct autoloader • Hopefully its PSR-0 compliant
- 25. Bleeding Edge Version Tag Version Branch Other Branch
- 26. Custom Forks • Fork on Github • Add your repo • Specify your branch
- 27. Bootstrapping >composer create-project -s dev fabpot/silex-skeleton .
- 28. More? • http://getcomposer.org • http://packagist.org • https://github.com/php-fig/fig- standards/blob/master/accepted/ Thanks Derek Gallo @derekgallo http://github.com/drock