awurth/functional

Functional primitives for PHP

v0.2.0 2025-07-14 13:01 UTC

Requires

• php: ^8.2

Requires (Dev)

• friendsofphp/php-cs-fixer: ^3.82.2
• phpstan/phpstan: ^2.1.17
• phpstan/phpstan-deprecation-rules: ^2.0.3
• phpstan/phpstan-phpunit: ^2.0.6
• phpstan/phpstan-strict-rules: ^2.0.4
• phpunit/phpunit: ^10.5.48
• rector/rector: ^2.1.1

MIT

• Lars Strojny
• Max Beutel
• Alexis Wurth

• functional

README

NOTE: functional-php used to come with a C extension that implemented most of the functions natively. As the performance differences weren’t that huge compared to the maintenance cost it has been removed.

A set of functional primitives for PHP, heavily inspired by Scala’s traversable collection, Dojo’s array functions and Underscore.js

• Works with arrays and everything implementing interface Traversable
• Consistent interface: for functions taking collections and callbacks, first parameter is always the collection, then the callback. Callbacks are always passed $value, $index, $collection.
• All functions reside in namespace Functional to not raise conflicts with any other extension or library

Installation

Run the following command in your project root:

$ composer require awurth/functional

Docs

Read the docs

Contributing

1. Fork and git clone the project
2. Install dependencies via composer install
3. Run the tests via composer run tests
4. Write code and create a PR

Thank you

• Richard Quadling and Pierre Joye for Windows build help
• David Soria Parra for various ideas and the userland version of Functional\flatten()
• Max Beutel for Functional\unique(), Functional\invoke_first(), Functional\invoke_last() and all the discussions
• An Phan for many great contributions