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Composing Project Dependencies
Composer is a tool for managing PHP dependencies. It allows you to declare dependencies in a composer.json file. When installed, Composer will download the dependencies and manage autoloading. It ensures each project has the correct versions of dependencies without conflicts. Composer makes it easy for projects to specify, install, and update their dependencies.
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Composing Project Dependencies
- 1. Composing Project Dependencies Derek Gallo @derekgallo http://github.com/drock
- 2. Problem •Projects use manylibs 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 atool 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.
- 12. Silex Sample • >composerinstall
- 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 aTeam •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 -sdev 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