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[HTTP & Networking](/categories/http) 4. / 5. psr-discovery/all ActiveMetapackage[HTTP & Networking](/categories/http) psr-discovery/all ================= Lightweight library that discovers available PSR implementations by searching for a list of well-known classes that implement the relevant interface, and returns an instance of the first one that is found. 1.2.0(1y ago)68.2M—7.3%4MITPHP ^8.2CI passing Since Mar 27Pushed 1y ago1 watchersCompare [ Source](https://github.com/psr-discovery/all)[ Packagist](https://packagist.org/packages/psr-discovery/all)[ Docs](https://github.com/psr-discovery)[ RSS](/packages/psr-discovery-all/feed)WikiDiscussions 1.x Synced 1mo ago READMEChangelog (3)Dependencies (6)Versions (4)Used By (4) **Lightweight library that discovers available [PSR](https://www.php-fig.org/psr/) implementations by searching for a list of well-known classes that implement the relevant interface, and returns an instance of the first one that is found.** This is a meta-package that includes all of the [PSR Discovery](https://github.com/psr-discovery) utility suite. This package bundles discovery support for [PSR-18 HTTP Clients](https://github.com/psr-discovery/http-client-implementations), [PSR-17 HTTP Factories](https://github.com/psr-discovery/http-factory-implementations), [PSR-14 Event Dispatchers](https://github.com/psr-discovery/event-dispatcher-implementations), [PSR-11 Containers](https://github.com/psr-discovery/container-implementations), [PSR-6 Caches](https://github.com/psr-discovery/cache-implementations) and [PSR-3 Logs](https://github.com/psr-discovery/log-implementations). When additional PSRs are added to the suite, they will be added to this package as well. This suite is largely intended for inclusion in libraries like SDKs that wish to support PSRs without requiring hard dependencies on specific implementations or demanding extra configuration by users. - [Requirements](#requirements) - [Installation](#installation) - [Usage](#usage) - [Contributing](#contributing) Requirements ------------ [](#requirements) - PHP 8.2+ - Composer 2.0+ Successful discovery requires the presence of a compatible implementation in the host application. This library does not install any implementations for you. Installation ------------ [](#installation) ``` composer require psr-discovery/all ``` Usage ----- [](#usage) Usage instructions for each discovery library can be found at the links below: - [PSR-18 HTTP Clients](https://github.com/psr-discovery/http-client-implementations) - [PSR-17 HTTP Factories](https://github.com/psr-discovery/http-factory-implementations) - [PSR-14 Event Dispatchers](https://github.com/psr-discovery/event-dispatcher-implementations) - [PSR-11 Containers](https://github.com/psr-discovery/container-implementations) - [PSR-6 Caches](https://github.com/psr-discovery/cache-implementations) - [PSR-3 Logs](https://github.com/psr-discovery/log-implementations) Contributing ------------ [](#contributing) Contributions are welcome! Please create issues and pull requests on the repository for the specific discovery library you're interested in. As a meta-package, this repository is not intended to accept contributions. --- This library is not produced or endorsed by, or otherwise affiliated with, the PHP-FIG. ### Health Score 44 — FairBetter than 92% of packages Maintenance38 Infrequent updates — may be unmaintained Popularity49 Moderate usage in the ecosystem Community13 Small or concentrated contributor base Maturity59 Maturing project, gaining track record 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 ~206 days Total 4 Last Release 529d ago PHP version history (3 changes)1.0.0PHP ^8.0 1.0.1PHP ^8.1 1.2.0PHP ^8.2 ### Community Maintainers ![](https://avatars.githubusercontent.com/u/3093?v=4)[Evan Sims](/maintainers/evansims)[@evansims](https://github.com/evansims) --- Top Contributors [![evansims](https://avatars.githubusercontent.com/u/3093?v=4)](https://github.com/evansims "evansims (17 commits)") --- Tags discoverymetapackagepsrpsr-11psr-14psr-17psr-18psr-3psr-6psrpsr-3PSR-11psr-17psr-18psr-14discoverypsr-6 ### Embed Badge ![Health badge](/badges/psr-discovery-all/health.svg) ``` [![Health](https://phpackages.com/badges/psr-discovery-all/health.svg)](https://phpackages.com/packages/psr-discovery-all) ``` ### Alternatives [psr/http-factory PSR-17: Common interfaces for PSR-7 HTTP message factories 1.9k692.9M1.9k](/packages/psr-http-factory)[psr/http-client Common interface for HTTP clients 1.7k680.7M2.1k](/packages/psr-http-client)[laminas/laminas-diactoros PSR HTTP Message implementations 546105.8M965](/packages/laminas-laminas-diactoros)[mezzio/mezzio PSR-15 Middleware Microframework 3883.6M97](/packages/mezzio-mezzio)[mezzio/mezzio-hal Hypertext Application Language implementation for PHP and PSR-7 20456.9k6](/packages/mezzio-mezzio-hal)[middlewares/utils Common utils for PSR-15 middleware packages 503.4M92](/packages/middlewares-utils) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)