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[Utility & Helpers](/categories/utility) 4. / 5. vk-php-utils/chain ActiveLibrary[Utility & Helpers](/categories/utility) vk-php-utils/chain ================== PHP Chain library 1.0.11(4y ago)213.5k↓82.6%MITPHPPHP >=7.4CI failing Since Nov 16Pushed 2y agoCompare [ Source](https://github.com/kustov-vitalik/php-utils-chain)[ Packagist](https://packagist.org/packages/vk-php-utils/chain)[ RSS](/packages/vk-php-utils-chain/feed)WikiDiscussions master Synced yesterday READMEChangelogDependencies (4)Versions (13)Used By (0) PHP Chain Library ================= [](#php-chain-library) [![Build Status](https://camo.githubusercontent.com/81f751e1b10eb9c534d97b459cba3e12b715ff7ed663a956af3b4192df54efb2/68747470733a2f2f7472617669732d63692e6f72672f6b7573746f762d766974616c696b2f7068702d7574696c732d636861696e2e7376673f6272616e63683d6d6173746572)](https://travis-ci.org/kustov-vitalik/php-utils-chain)[![Latest Stable Version](https://camo.githubusercontent.com/d8f37d1cb7ceb6618c828478198f183a33ca43fbd3b1930e628da43892852ceb/68747470733a2f2f706f7365722e707567782e6f72672f766b2d7068702d7574696c732f636861696e2f762f737461626c65)](https://packagist.org/packages/vk-php-utils/chain)[![Coverage Status](https://camo.githubusercontent.com/e16a09f9665401449d5e1f79d6c3eab0a027145c5d3852ef9264bb95f4dc644c/68747470733a2f2f636f766572616c6c732e696f2f7265706f732f6769746875622f6b7573746f762d766974616c696b2f7068702d7574696c732d636861696e2f62616467652e7376673f6272616e63683d6d6173746572)](https://coveralls.io/github/kustov-vitalik/php-utils-chain?branch=master)[![Latest Unstable Version](https://camo.githubusercontent.com/a56ed091dcb50a6be15f524867cc0fbc146367e4d6cd654e63c87f19ad2fe5ee/68747470733a2f2f706f7365722e707567782e6f72672f766b2d7068702d7574696c732f636861696e2f762f756e737461626c65)](https://packagist.org/packages/vk-php-utils/chain)[![Total Downloads](https://camo.githubusercontent.com/fa03c4eac8d46d64b13209a7e69f57fd4989a300fe664a7c3c7da6bf95b633db/68747470733a2f2f706f7365722e707567782e6f72672f766b2d7068702d7574696c732f636861696e2f646f776e6c6f616473)](https://packagist.org/packages/vk-php-utils/chain)[![License](https://camo.githubusercontent.com/31e78d9e33029abf91273d66ab1681228cd7d8d612b70b52d8c78701df00b116/68747470733a2f2f706f7365722e707567782e6f72672f766b2d7068702d7574696c732f636861696e2f6c6963656e7365)](https://packagist.org/packages/vk-php-utils/chain)[![composer.lock](https://camo.githubusercontent.com/fa0bb83fec5f7d9b831b70dd62450ff1ae8056e802a642b27e1cd0d6cfab4c34/68747470733a2f2f706f7365722e707567782e6f72672f766b2d7068702d7574696c732f636861696e2f636f6d706f7365726c6f636b)](https://packagist.org/packages/vk-php-utils/chain) The library was created to make working with collections more simple in PHP Requirements ------------ [](#requirements) - PHP >=7.4 (PHP 8.1 is supported) - Extensions: json, mbstring Installation ------------ [](#installation) ``` composer require vk-php-utils/chain:^1.0 ``` Chain API --------- [](#chain-api) ``` use VKPHPUtils\Chain\Chain; // Constructors Chain::of(...$items): Chain // Initialize mutable chain Chain::immutable(...$items): Chain // Initialize immutable chain // API toArray(): array; // Converts the chain to array (applies all chain-functions) toChain(): Chain; // Useful with mutable chain. Returns new chain with all current chain functions applied hasKey($key): bool // Check exists the key in current chain or no hasValue($value): bool; // Check existence of the value in the chain search($value) // Searches position (key) of the value in current chain. Returns null if the value not found getValue($key) // Get value using key setValue($key, $value): Chain; // Set value using key remove($key): Chain; // Removes element with index eq to $key isEmpty(): bool // Check is the chain empty size(): int // Get the chain size (number of elements) count(): int // Get the chain size (number of elements) append($any): Chain; // Appends value into the chain prepend($any): Chain; // Prepend value into the chain // map/reduce methods filter(?callable $fn = null): Chain // Filter the chain using function $fn map(callable $fn): Chain; // Applies function $fn to each chain item and returns chain with mapped entities. Index-safe operation flatMap(callable $fn): Chain; // Works like {@see map()} but returns iterable set of mapped objects per each the chain's item reduce(callable $fn, $initialValue = null) // Calculate aggregate function result // keys/values keys(): Chain; // Get keys of the chain values(): Chain; // Get chain values // chain methods diff(...$elements): Chain; // Calculates diff between current chain and passed one merge(...$elements): Chain; // Merges all elements with current chain intersect(...$elements): Chain; // Calculates intersection of two sets (current chain and passed one). Non index-safe operation intersectKeepIndexes(...$elements): Chain; // Calculates intersection of two sets (current chain and passed one). Index-safe operation frequencyAnalysis(): Chain; // Created histogram/frequency analysis of the chain flip(): Chain; // Flip the chain mix(): Chain; // Mixes the chain reverse(bool $saveIndex = false): Chain; // Reverse current chain unique(bool $saveIndex = false): Chain; // Unique items of current chain slice(int $startIncluded, int $stopExcluded, int $step = 1, bool $saveIndex = false): Chain; // Get chain's chunk forEach(callable $fn): Chain; // Just calls $fn for each chain element // sort methods sortKeys(?callable $sortFn = null, ?int $direction = SORT_ASC, ?int $sortFlags = null): Chain; // Sorts chain by keys sortValues(?callable $sortFn = null, ?int $direction = SORT_ASC, ?int $sortFlags = SORT_REGULAR): Chain; // Sorts chain by values. Index-safe operation sortByProperty(string $propertyName, int $direction = SORT_ASC): Chain; // Sorts collection by given property ``` Run Tests --------- [](#run-tests) `./vendor/bin/phpunit ./tests` ### Health Score 33 — LowBetter than 72% of packages Maintenance20 Infrequent updates — may be unmaintained Popularity26 Limited adoption so far Community6 Small or concentrated contributor base Maturity65 Established project with proven stability Bus Factor1 Top contributor holds 100% 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 ~79 days Recently: every ~211 days Total 12 Last Release 1553d ago PHP version history (3 changes)1.0.0PHP ^7.3 1.0.4PHP ^7.4 1.0.9PHP >=7.4 ### Community Maintainers ![](https://avatars.githubusercontent.com/u/1487558?v=4)[Vitaly Kustov](/maintainers/kustov-vitalik)[@kustov-vitalik](https://github.com/kustov-vitalik) --- Top Contributors [![kustov-vitalik](https://avatars.githubusercontent.com/u/1487558?v=4)](https://github.com/kustov-vitalik "kustov-vitalik (13 commits)") ### Code Quality TestsPHPUnit ### Embed Badge ![Health badge](/badges/vk-php-utils-chain/health.svg) ``` [![Health](https://phpackages.com/badges/vk-php-utils-chain/health.svg)](https://phpackages.com/packages/vk-php-utils-chain) ``` ### Alternatives [easycorp/easyadmin-bundle Admin generator for Symfony applications 4.3k17.9M388](/packages/easycorp-easyadmin-bundle)[symfony/ux-autocomplete JavaScript Autocomplete functionality for Symfony 645.9M39](/packages/symfony-ux-autocomplete)[solspace/craft-freeform The most flexible and user-friendly form building plugin! 54681.3k18](/packages/solspace-craft-freeform)[api-platform/symfony Symfony API Platform integration 384.5M127](/packages/api-platform-symfony)[symfony/ai-platform PHP library for interacting with AI platform provider. 521.4M283](/packages/symfony-ai-platform)[api-platform/serializer API Platform core Serializer 274.8M85](/packages/api-platform-serializer) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)