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Composer helps you declare, manage, and install dependencies of PHP projects.

Seehttps://getcomposer.org/ for more information and documentation.

Download and install Composer by following theofficial instructions.

For usage, seethe documentation.

Find public packages onPackagist.org.

For private package hosting take a look atPrivate Packagist.

Follow@packagist or@seldaek on Twitter for announcements, or check the#composerphp hashtag.

For support, Stack Overflow offers a good collection ofComposer related questions, or you can use theGitHub discussions.

Please note that this project is released with aContributor Code of Conduct.By participating in this project and its community you agree to abide by those terms.

PHP 7.2.5 or above for the latest version.

PHP versions 5.3.2 - 8.1 are still supported via the LTS releases of Composer (2.2.x). If yourun the installer or theself-update command the appropriate Composer version for your PHPshould be automatically selected.

• unzip (or7z/7zz)
• gzip
• tar
• unrar
• xz
• Git (git)
• Mercurial (hg)
• Fossil (fossil)
• Perforce (p4)
• Subversion (svn)

The need for these binary dependencies may vary depending on individual use cases. For most users,only 2 dependencies are essential for Composer:unzip (or7z/7zz), andgit. If theext-zip extension is available, onlygitis needed, but this is not recommended.

• Nils Adermann |GitHub |Twitter |naderman@naderman.de |naderman.de
• Jordi Boggiano |GitHub |Twitter |j.boggiano@seld.be |seld.be

See also the list ofcontributors who participated in this project.

Please send any sensitive issue tosecurity@packagist.org. Thanks!

Composer is licensed under the MIT License - see theLICENSE file for details.

• This project's Solver started out as a PHP port of openSUSE'sLibzypp satsolver.