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[Utility & Helpers](/categories/utility) 4. / 5. hoa/visitor AbandonedArchivedLibrary[Utility & Helpers](/categories/utility) hoa/visitor =========== The Hoa\\Visitor library. 2.17.01.16(9y ago)26216.0M—0.9%13[2 issues](https://github.com/hoaproject/Visitor/issues)[1 PRs](https://github.com/hoaproject/Visitor/pulls)16BSD-3-ClausePHP Since Sep 16Pushed 5y ago7 watchersCompare [ Source](https://github.com/hoaproject/Visitor)[ Packagist](https://packagist.org/packages/hoa/visitor)[ Docs](https://hoa-project.net/)[ RSS](/packages/hoa-visitor/feed)WikiDiscussions master Synced 1mo ago READMEChangelog (9)Dependencies (2)Versions (12)Used By (16) [![Hoa](https://camo.githubusercontent.com/2b5c32c5d4bc5e9298821b22d364a522e2dbc0295c1c011b1f9f86a4d07df07e/68747470733a2f2f7374617469632e686f612d70726f6a6563742e6e65742f496d6167652f486f612e737667)](https://camo.githubusercontent.com/2b5c32c5d4bc5e9298821b22d364a522e2dbc0295c1c011b1f9f86a4d07df07e/68747470733a2f2f7374617469632e686f612d70726f6a6563742e6e65742f496d6167652f486f612e737667) --- [![Build status](https://camo.githubusercontent.com/6bb4f6c7aaa602a4a303228cbf959819ba78f1506f23e3e339de67407217bb20/68747470733a2f2f696d672e736869656c64732e696f2f7472617669732f686f6170726f6a6563742f56697369746f722f6d61737465722e737667)](https://travis-ci.org/hoaproject/Visitor) [![Code coverage](https://camo.githubusercontent.com/ae772275820a464f2699a9f17106124e81c71278635eb4a740bc5b1d0fecde4a/68747470733a2f2f696d672e736869656c64732e696f2f636f766572616c6c732f686f6170726f6a6563742f56697369746f722f6d61737465722e737667)](https://coveralls.io/github/hoaproject/Visitor?branch=master) [![Packagist](https://camo.githubusercontent.com/ac83f5e2bf8e87adadd355e11a218703a332d4ce886ce910e2f654d27d2205db/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f64742f686f612f76697369746f722e737667)](https://packagist.org/packages/hoa/visitor) [![License](https://camo.githubusercontent.com/a6c6a8f63ebf120c3b4a6b64817bdd0093988a923abea2b0b1a69c5eae673081/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f6c2f686f612f76697369746f722e737667)](https://hoa-project.net/LICENSE) Hoa is a **modular**, **extensible** and **structured** set of PHP libraries. Moreover, Hoa aims at being a bridge between industrial and research worlds. Hoa\\Visitor ============ [](#hoavisitor) [![Help on IRC](https://camo.githubusercontent.com/4dbc9c9d28c30cf1ab591f4bb8212fe4dbddc734145df532a9bb86b09878d4c6/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f68656c702d253233686f6170726f6a6563742d6666303036362e737667)](https://webchat.freenode.net/?channels=#hoaproject)[![Help on Gitter](https://camo.githubusercontent.com/8c4c85951788ff606b1268cb3dd946be05e3054795455d0a7b9250711bc2ac05/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f68656c702d6769747465722d6666303036362e737667)](https://gitter.im/hoaproject/central)[![Documentation](https://camo.githubusercontent.com/7059ad5f1a363f9098686c59d432f01d7330aed9d4b6c8111d985fd64cfc6c60/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f646f63756d656e746174696f6e2d6861636b5f626f6f6b2d6666303036362e737667)](https://central.hoa-project.net/Documentation/Library/Visitor)[![Board](https://camo.githubusercontent.com/fd81654ba14b3aca3a713e1b471bc3fc3ba7b5bb3761ccffd6eea2e2ed1fa5ca/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f6f7267616e69736174696f6e2d626f6172642d6666303036362e737667)](https://waffle.io/hoaproject/visitor) This library provides interfaces to apply the visitor pattern. [Learn more](https://central.hoa-project.net/Documentation/Library/Visitor). Installation ------------ [](#installation) With [Composer](https://getcomposer.org/), to include this library into your dependencies, you need to require [`hoa/visitor`](https://packagist.org/packages/hoa/visitor): ``` $ composer require hoa/visitor '~2.0' ``` For more installation procedures, please read [the Source page](https://hoa-project.net/Source.html). Testing ------- [](#testing) Before running the test suites, the development dependencies must be installed: ``` $ composer install ``` Then, to run all the test suites: ``` $ vendor/bin/hoa test:run ``` For more information, please read the [contributor guide](https://hoa-project.net/Literature/Contributor/Guide.html). Quick usage ----------- [](#quick-usage) We propose to explain the basis of this library. We have two entities: an element to visit and a visitor, for example a node of a tree and a dumper. The element to visit will implement the `Hoa\Visitor\Element` interface and the visitor will implement the `Hoa\Visitor\Visit` interface. The first one will ask to implement the `accept` method in order to define what data it holds will be visited. The second one will ask to implement the `visit` method which will contain the visitor computations. We will find several examples in Hoa libraries. Documentation ------------- [](#documentation) The [hack book of `Hoa\Visitor`](https://central.hoa-project.net/Documentation/Library/Visitor)contains detailed information about how to use this library and how it works. To generate the documentation locally, execute the following commands: ``` $ composer require --dev hoa/devtools $ vendor/bin/hoa devtools:documentation --open ``` More documentation can be found on the project's website: [hoa-project.net](https://hoa-project.net/). Getting help ------------ [](#getting-help) There are mainly two ways to get help: - On the [`#hoaproject`](https://webchat.freenode.net/?channels=#hoaproject)IRC channel, - On the forum at [users.hoa-project.net](https://users.hoa-project.net). Contribution ------------ [](#contribution) Do you want to contribute? Thanks! A detailed [contributor guide](https://hoa-project.net/Literature/Contributor/Guide.html) explains everything you need to know. License ------- [](#license) Hoa is under the New BSD License (BSD-3-Clause). Please, see [`LICENSE`](https://hoa-project.net/LICENSE) for details. ### Health Score 50 — FairBetter than 96% of packages Maintenance20 Infrequent updates — may be unmaintained Popularity65 Solid adoption and visibility Community29 Small or concentrated contributor base Maturity70 Established project with proven stability Bus Factor1 Top contributor holds 88.9% 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 ~94 days Recently: every ~172 days Total 10 Last Release 3410d ago Major Versions 0.14.09.23 → 1.14.11.152014-11-15 1.15.08.17 → 2.16.01.112016-01-11 ### Community Maintainers ![](https://www.gravatar.com/avatar/a410060743cec0e0d8654661b726a7a25f5888f18059d4c942a8fd9a8128f0da?d=identicon)[Hoa](/maintainers/Hoa) --- Top Contributors [![Hywan](https://avatars.githubusercontent.com/u/946104?v=4)](https://github.com/Hywan "Hywan (56 commits)")[![vonglasow](https://avatars.githubusercontent.com/u/1275202?v=4)](https://github.com/vonglasow "vonglasow (3 commits)")[![Grummfy](https://avatars.githubusercontent.com/u/668804?v=4)](https://github.com/Grummfy "Grummfy (1 commits)")[![jubianchi](https://avatars.githubusercontent.com/u/327237?v=4)](https://github.com/jubianchi "jubianchi (1 commits)")[![shulard](https://avatars.githubusercontent.com/u/482993?v=4)](https://github.com/shulard "shulard (1 commits)")[![stephpy](https://avatars.githubusercontent.com/u/232744?v=4)](https://github.com/stephpy "stephpy (1 commits)") --- Tags hoalibraryphpvisitor-patternlibraryvisitorstructurevisit ### Embed Badge ![Health badge](/badges/hoa-visitor/health.svg) ``` [![Health](https://phpackages.com/badges/hoa-visitor/health.svg)](https://phpackages.com/packages/hoa-visitor) ``` ### Alternatives [league/iso3166 ISO 3166-1 PHP Library 70036.3M116](/packages/league-iso3166) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)