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[Testing & Quality](/categories/testing) 4. / 5. hexlet/phpstan-fp ActiveLibrary[Testing & Quality](/categories/testing) hexlet/phpstan-fp ================= PHPStan rules for functional programming v3.1.1(1y ago)926.1k4[1 issues](https://github.com/Hexlet/phpstan-functional-programming/issues)2MITPHPPHP >=8.2CI passing Since Oct 24Pushed 8mo ago2 watchersCompare [ Source](https://github.com/Hexlet/phpstan-functional-programming)[ Packagist](https://packagist.org/packages/hexlet/phpstan-fp)[ RSS](/packages/hexlet-phpstan-fp/feed)WikiDiscussions main Synced today READMEChangelog (2)Dependencies (4)Versions (9)Used By (2) phpstan-functional-programming ============================== [](#phpstan-functional-programming) [![github action status](https://github.com/Hexlet/phpstan-functional-programming/workflows/PHP%20CI/badge.svg)](https://github.com/Hexlet/phpstan-functional-programming/actions) [PHPStan](https://phpstan.org) rules for functional programming Install ------- [](#install) To use this extension, require it in [Composer](https://getcomposer.org): ``` $ composer require --dev hexlet/phpstan-fp ``` Usage ----- [](#usage) All of the rules provided (and used) by this library are included in [`extension.neon`](extension.neon). When you are using [phpstan/extension-installer](https://github.com/phpstan/extension-installer), `extension.neon` will be automatically included. Otherwise you need to include `extension.neon` in your `phpstan.neon`: ``` includes: - vendor/hexlet/phpstan-fp/extension.neon ``` Rules ----- [](#rules) This package provides the following rules for use with *PHPStan*: - [`DisallowClassesRule`](docs/rules/DisallowClassesRule.md) - Forbid the use of `class`. - [`DisallowThrowRule`](docs/rules/DisallowThrowRule.md) - Forbid the use of `throw`. - [`DisallowUnusedExpressionRule`](docs/rules/DisallowUnusedExpressionRule.md) - Enforce that an expression gets used. - [`DisallowMutatingFunctionsRule`](docs/rules/DisallowMutatingFunctionsRule.md) - Forbid the use of mutating functions. - [`DisallowLoopsRule`](docs/rules/DisallowLoopsRule.md) - Forbid the use of loops. - [`DisallowMutationRule`](docs/rules/DisallowMutationRule.md) - Forbid the use of mutating operators. Disabling rules --------------- [](#disabling-rules) If you don't want to start using some of the available rules at once, you can. ``` parameters: phpstanFunctionalProgramming: disallowClasses: false disallowLoops: false disallowThrow: false disallowUnusedExpression: false disallowVariablesMutation: false disallowMutatingFunctions: false ``` [![Hexlet Ltd. logo](https://raw.githubusercontent.com/Hexlet/assets/master/images/hexlet_logo128.png)](https://hexlet.io/?utm_source=github&utm_medium=link&utm_campaign=phpstan-functional-programming) This repository is created and maintained by the team and the community of Hexlet, an educational project. [Read more about Hexlet](https://hexlet.io/?utm_source=github&utm_medium=link&utm_campaign=phpstan-functional-programming). See most active contributors on [hexlet-friends](https://friends.hexlet.io/). ### Health Score 47 — FairBetter than 93% of packages Maintenance51 Moderate activity, may be stable Popularity33 Limited adoption so far Community21 Small or concentrated contributor base Maturity72 Established project with proven stability Bus Factor2 2 contributors hold 50%+ of commits 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 ~232 days Recently: every ~252 days Total 8 Last Release 452d ago Major Versions v1.1.2 → v2.0.02023-07-05 v2.0.0 → 3.0.02025-04-07 PHP version history (5 changes)v1.0.0PHP ^7.1 v1.1.0PHP >=7.1 v1.1.2PHP >=7.3 v2.0.0PHP >=8.1 3.0.0PHP >=8.2 ### Community Maintainers ![](https://www.gravatar.com/avatar/cb235b98fa8ad8e448619e21de33838bf6c8f3dca0d8420f637bb8aec55bddd0?d=identicon)[hexlet](/maintainers/hexlet) --- Top Contributors [![fey](https://avatars.githubusercontent.com/u/697178?v=4)](https://github.com/fey "fey (29 commits)")[![corsicanec82](https://avatars.githubusercontent.com/u/12639352?v=4)](https://github.com/corsicanec82 "corsicanec82 (26 commits)")[![mokevnin](https://avatars.githubusercontent.com/u/308430?v=4)](https://github.com/mokevnin "mokevnin (15 commits)")[![ashikov](https://avatars.githubusercontent.com/u/676554?v=4)](https://github.com/ashikov "ashikov (6 commits)")[![ssssank](https://avatars.githubusercontent.com/u/17835285?v=4)](https://github.com/ssssank "ssssank (2 commits)")[![amshkv](https://avatars.githubusercontent.com/u/23584933?v=4)](https://github.com/amshkv "amshkv (1 commits)")[![IDilettant](https://avatars.githubusercontent.com/u/59534588?v=4)](https://github.com/IDilettant "IDilettant (1 commits)") ### Code Quality TestsPHPUnit Code StylePHP\_CodeSniffer ### Embed Badge ![Health badge](/badges/hexlet-phpstan-fp/health.svg) ``` [![Health](https://phpackages.com/badges/hexlet-phpstan-fp/health.svg)](https://phpackages.com/packages/hexlet-phpstan-fp) ``` ### Alternatives [larastan/larastan Larastan - Discover bugs in your code without running it. 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