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[Utility & Helpers](/categories/utility) 4. / 5. grrr-amsterdam/garp-functional ActiveLibrary[Utility & Helpers](/categories/utility) grrr-amsterdam/garp-functional ============================== Utility library embracing functional programming paradigms. v6.3.0(1y ago)32116.1k↓40%4[1 PRs](https://github.com/grrr-amsterdam/garp-functional/pulls)5BSD-3-ClausePHPPHP >=7.2.0CI passing Since Jan 30Pushed 4mo ago2 watchersCompare [ Source](https://github.com/grrr-amsterdam/garp-functional)[ Packagist](https://packagist.org/packages/grrr-amsterdam/garp-functional)[ RSS](/packages/grrr-amsterdam-garp-functional/feed)WikiDiscussions main Synced 1mo ago READMEChangelogDependencies (3)Versions (61)Used By (5) [![PHPUnit](https://github.com/grrr-amsterdam/garp-functional/actions/workflows/phpunit.yml/badge.svg)](https://github.com/grrr-amsterdam/garp-functional/actions/workflows/phpunit.yml) [![PHPCS](https://github.com/grrr-amsterdam/garp-functional/actions/workflows/phpcs.yml/badge.svg)](https://github.com/grrr-amsterdam/garp-functional/actions/workflows/phpcs.yml) [![PHPStan](https://github.com/grrr-amsterdam/garp-functional/actions/workflows/phpstan.yml/badge.svg)](https://github.com/grrr-amsterdam/garp-functional/actions/workflows/phpstan.yml) Garp Functional =============== [](#garp-functional) Utility library embracing functional programming paradigms. [Documentation](https://grrr-amsterdam.github.io/garp-functional/) Developed with ❤️ by [GRRR](https://grrr.nl) -------------------------------------------- [](#developed-with-️-by-grrr) - GRRR is a [B Corp](https://grrr.nl/en/b-corp/) - GRRR has a [tech blog](https://grrr.tech/) - GRRR is [hiring](https://grrr.nl/en/jobs/) - [@GRRRTech](https://twitter.com/grrrtech) tweets Philosophy ---------- [](#philosophy) `Garp\Functional` is a practical functional library that strives to embrace functional paradigms. - Functions are pure, referentially transparent, without side-effects. - Data immutability is favored over mutating existing properties of given parameters. - In general, functions are curried. Almost all of the functions in the library can be called partially applied, to a point where this makes sense. - Function parameters are ordered to promote currying. Data is usually the last thing to go in, making every function a fine candidate to pass to native `array_map`, `array_filter` and the like, without having to create a closure around the call. - Higher-order functions are provided to fill the gaps. Functions like `compose`, `partial`, `partial_right` or `not` are legos for you to use in your own implementation. - Nothing is type-hinted too strictly. I don't care if you pass a string or an array to `prop`, as long as it allows accessing members thru bracket syntax `[]`, I'll allow it. Nothing irks me more about PHP than not being able to toss a `Traversable`object into the native `array_map`. - Typeclasses are added, broadening the applicability of the functions. Next to primitives, they will now work with your objects as well, so long as they implement the right interface. Usage ----- [](#usage) Installation: ``` composer require grrr-amsterdam/garp-functional ``` That'll do, all functions are available to you. [Read the docs for a complete reference](https://grrr-amsterdam.github.io/garp-functional/) Thanks ------ [](#thanks) This library is inspired by beautiful languages like [Haskell](https://www.haskell.org/) and [Clojure](https://clojure.org/), as well as the awesome [RamdaJS](https://ramdajs.com/) library. ### Health Score 53 — FairBetter than 97% of packages Maintenance61 Regular maintenance activity Popularity41 Moderate usage in the ecosystem Community24 Small or concentrated contributor base Maturity72 Established project with proven stability Bus Factor1 Top contributor holds 74.7% of commits — single point of failure How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window. **Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores. **Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement. **Maturity (30%)** — Project age, version count, PHP version support, and release stability. ### Release Activity Cadence Every ~52 days Recently: every ~149 days Total 56 Last Release 480d ago Major Versions v1.0.17 → v2.0.02018-07-04 v2.0.7 → v3.0.02019-02-06 v3.1.1 → v4.0.02019-04-28 v4.0.2 → v5.0.02020-12-03 v5.0.3 → v6.0.02023-06-07 PHP version history (3 changes)v0.1.0PHP >=5.3.0 v3.0.0PHP >=7.1.0 v6.0.0PHP >=7.2.0 ### Community Maintainers ![](https://avatars.githubusercontent.com/u/803176?v=4)[Harmen Janssen](/maintainers/harmenjanssen)[@harmenjanssen](https://github.com/harmenjanssen) ![](https://www.gravatar.com/avatar/cf6699e100eaa1b3fb2389b044e2365fb73add031d3e91ecf6cf4507c99643a5?d=identicon)[RamiroGrrr](/maintainers/RamiroGrrr) --- Top Contributors [![harmenjanssen](https://avatars.githubusercontent.com/u/803176?v=4)](https://github.com/harmenjanssen "harmenjanssen (171 commits)")[![martijngastkemper](https://avatars.githubusercontent.com/u/250662?v=4)](https://github.com/martijngastkemper "martijngastkemper (43 commits)")[![Hansterdam](https://avatars.githubusercontent.com/u/28623671?v=4)](https://github.com/Hansterdam "Hansterdam (5 commits)")[![MarcoWorms](https://avatars.githubusercontent.com/u/7863230?v=4)](https://github.com/MarcoWorms "MarcoWorms (3 commits)")[![schoenkaft](https://avatars.githubusercontent.com/u/1607628?v=4)](https://github.com/schoenkaft "schoenkaft (3 commits)")[![HammenWS](https://avatars.githubusercontent.com/u/1799286?v=4)](https://github.com/HammenWS "HammenWS (2 commits)")[![dependabot[bot]](https://avatars.githubusercontent.com/in/29110?v=4)](https://github.com/dependabot[bot] "dependabot[bot] (2 commits)") --- Tags curryingdata-lastfunctional-programminghacktoberfestphp ### Code Quality TestsPHPUnit Static AnalysisPHPStan Code StylePHP\_CodeSniffer Type Coverage Yes ### Embed Badge ![Health badge](/badges/grrr-amsterdam-garp-functional/health.svg) ``` [![Health](https://phpackages.com/badges/grrr-amsterdam-garp-functional/health.svg)](https://phpackages.com/packages/grrr-amsterdam-garp-functional) ``` ### Alternatives [react/stream Event-driven readable and writable streams for non-blocking I/O in ReactPHP 689126.8M194](/packages/react-stream)[aimeos/map Easy and elegant handling of PHP arrays as array-like collection objects similar to jQuery and Laravel Collections 4.2k412.9k11](/packages/aimeos-map)[mageplaza/module-core Mageplaza Core for Magento 2 7910.7M53](/packages/mageplaza-module-core) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)