The document discusses Composer, a package management tool for PHP, detailing its features and functions in dependency management, repository types, and installation process. It compares Composer to other package management tools in different programming languages and highlights its unique approach to handling package dependencies and types. Additionally, it outlines the structure of Composer's configuration files and the roles of various components within the system.

1. Composer — Package Management for PHP. Silver Bullet? Kirill chEbba Chebunin Billix [email_address] http://github.com/chEbba @iamchEbba

2. Problem

3. Dependent Libraries

4. Dependent Libraries

5. Dependent Libraries

6. Many Separate Projects

7. Overview of Tools Python: easy_install, pip Ruby: gems Java: maven, ivy C#(.NET): NuGet, NuPack PHP: PEAR/Pyrus

8. PEAR. Why NOT? #pyrus mypear = hack Channel1/Package1 != Channel2/Package1 No “Source”, only “Dists” Special Package Type (+/-)

9. Composer. Silver Bullet?

10. Composer. Simple #wget http://getcomposer.org/composer.phar #vi /path/to/project/.composer.json #php composer.phar install PEAR package on release?

11. Composer. File { "require" : { "vendor/package1" : "1.3.2" , "vendor/package2" : "1.*" , "vendor/package3" : ">=2.0.3" } }

12. Composer. Fundamentals Package Repository = Metadata Storage Separated from Repository Unique Package Name = vendor/package Different Storage Types (Downloaders) “ Source” & “Dist” Dependecy Resolver

13. Composer. Repository File "composer \/ composer" :{ "name" : "composer \/ composer" , "description" : "Package Manager" , "maintainers" :[], "versions" :{ "master-dev" :{ "require" :{ "php" : ">=5.3.0" , "symfony \/ console" : "2.0.5" , "symfony \/ finder" : "2.0.5" } } } }

14. Composer. Repository PlatformRepository (php & extensions) ComposerRepository ($url/composer.json) PearRepository (PEAR channel support) VcsRepository (github, git, svn, hg) LocalRepository?

15. Composer. Downloader &quot;source&quot; :{ &quot;type&quot; : &quot;git&quot; , &quot;url&quot; : &quot;http: \/\/ github.com \/ composer \/ composer.git&quot; , &quot;reference&quot; : &quot;e6c3929ea9f7d732ed3352dc06ed950af140ebf7&quot; , &quot;shasum&quot; : &quot;&quot; }, &quot;dist&quot; :{ &quot;type&quot; : &quot;zip&quot; , &quot;url&quot; : &quot;<...>e6c3929ea9f7d732ed3352dc06ed950af140ebf7&quot; , &quot;shasum&quot; : &quot;e32a4bac17d56533393b856699491c4c02f3e1ab&quot; , &quot;reference&quot; : &quot;e6c3929ea9f7d732ed3352dc06ed950af140ebf7&quot; }

16. Composer. Downloader ZipDownloader (dist) TarDownloader (dist: tar, tar.gz, tar.bz2) PharDownloader (dist) PearDownloader (dist: uses tar) GitDownloader (source) HgDownloader (source)

17. Composer. Installer LibraryInstaller (vendor/*) &quot;composer \/ composer&quot; :{ &quot;name&quot; : &quot;composer \/ composer&quot; , &quot;description&quot; : &quot;Package Manager&quot; , &quot;type&quot; : &quot;library&quot; }

18. Composer. Dependency Resolver OpenSUSE's Libzypp satsolver Requires Conflicts Provides Replaces Recommends Suggests

19. Composer. Dependency Resolver &quot;require&quot; :{ &quot;php&quot; : &quot;>=5.3.0&quot; , &quot;symfony \/ console&quot; : &quot;2.0.5&quot; , &quot;symfony \/ finder&quot; : &quot;2.0.5&quot; }

20. Composer. Autoload PSR-0 Autoloading (.composer/autoload.php) &quot;versions&quot; :{ &quot;master-dev&quot; :{ &quot;autoload&quot; :{ &quot;psr-0&quot; :{ &quot;Composer&quot; : &quot;src \/ &quot; } } } }

21. Questions? =)