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[HTTP & Networking](/categories/http) 4. / 5. eliashaeussler/sse ActiveLibrary[HTTP & Networking](/categories/http) eliashaeussler/sse ================== PHP implementation of server-sent events using event streams 2.0.0(7mo ago)10398.0k↓40.5%[1 issues](https://github.com/eliashaeussler/sse/issues)2GPL-3.0-or-laterPHPPHP ~8.2.0 || ~8.3.0 || ~8.4.0 || ~8.5.0CI passing Since Jun 15Pushed 6d ago1 watchersCompare [ Source](https://github.com/eliashaeussler/sse)[ Packagist](https://packagist.org/packages/eliashaeussler/sse)[ RSS](/packages/eliashaeussler-sse/feed)WikiDiscussions main Synced 2d ago READMEChangelog (5)Dependencies (13)Versions (11)Used By (2) [![Screenshot](docs/code-example.png)](#-installation) Server-Sent Events in PHP ========================= [](#server-sent-events-in-php) [![Coverage](https://camo.githubusercontent.com/336ec3a7b42361de5c74c1806db264d6c7dac3717d4de28f90c5ab09a3ffe3ad/68747470733a2f2f696d672e736869656c64732e696f2f636f766572616c6c73436f7665726167652f6769746875622f656c6961736861657573736c65722f7373653f6c6f676f3d636f766572616c6c73)](https://coveralls.io/github/eliashaeussler/sse)[![CI](https://camo.githubusercontent.com/7e3342fc7c1120b22b049dc46836da1bab8880b7d6724edc6e36f94eb174ec0f/68747470733a2f2f696d672e736869656c64732e696f2f6769746875622f616374696f6e732f776f726b666c6f772f7374617475732f656c6961736861657573736c65722f7373652f63692e79616d6c3f6c6162656c3d4349266c6f676f3d676974687562)](https://github.com/eliashaeussler/sse/actions/workflows/ci.yaml)[![Supported PHP Versions](https://camo.githubusercontent.com/5ed88814172c0c3265ff61127c56766be86894b611c1bf6b23480cd96c53ce30/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f646570656e64656e63792d762f656c6961736861657573736c65722f7373652f7068703f6c6f676f3d706870)](https://packagist.org/packages/eliashaeussler/sse) A server implementation of [server-sent events](https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events/Using_server-sent_events), written in PHP. It can be used to stream events back to the client. All event-driven features are highly customizable, even custom emitters can be used. The library also provides a PSR-7 compliant event stream implementation. πŸš€ Features ---------- [](#-features) - Server implementation of [server-sent events (SSE)](https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events/Using_server-sent_events) - Highly customizable via interface implementations - Self-emitting event stream - PSR-7 compliant event stream πŸ”₯ Installation -------------- [](#-installation) [![Packagist](https://camo.githubusercontent.com/b939215eb8192a74a7de9cb189a480c4820b24d1015e147004121429528f16b3/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f762f656c6961736861657573736c65722f7373653f6c6162656c3d76657273696f6e266c6f676f3d7061636b6167697374)](https://packagist.org/packages/eliashaeussler/sse)[![Packagist Downloads](https://camo.githubusercontent.com/f639ef1e8ddb74720098a943152dfe25fddfb913ad6129467a19465d667b2edc/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f64742f656c6961736861657573736c65722f7373653f636f6c6f723d627269676874677265656e)](https://packagist.org/packages/eliashaeussler/sse) ``` composer require eliashaeussler/sse ``` ⚑ Usage ------- [](#-usage) ``` use EliasHaeussler\SSE; // Open event stream $eventStream = SSE\Stream\SelfEmittingEventStream::create(); $eventStream->open(); // Send event $eventStream->sendEvent(new MyCustomEvent($eventData)); // Send message $eventStream->sendMessage('myCustomEvent', $eventData); // Close event stream $eventStream->close(); ``` 🎒 Architecture -------------- [](#-architecture) ### Event stream [](#event-stream) All events are sent through [event streams](https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events/Using_server-sent_events#sending_events_from_the_server). The library provides an interface [`Stream\EventStream`](src/Stream/EventStream.php) that abstracts all stream parts during the whole event streaming progress. The following event stream implementations are currently available: - [**`Stream\SelfEmittingEventStream`**](src/Stream/SelfEmittingEventStream.php)sends all stream data to an [emitter](#emitter) that takes care of writing data into an active resource. This is the best working solution in most cases. - [**`Stream\Psr7EventStream`**](src/Stream/Psr7EventStream.php) creates a PSR-7 compliant response during the whole event streaming progress. Note that this response is not emitted on real time. ### Emitter [](#emitter) All data of a self-emitting event stream is handed over to a given emitter. The library provides an interface [`Stream\Emitter\Emitter`](src/Stream/Emitter/Emitter.php)that takes care of all passed data. The following emitter implementations are currently available: - [**`Stream\Emitter\RealtimeEmitter`**](src/Stream/Emitter/RealtimeEmitter.php)writes all stream data directly to the active standard output. ### Event [](#event) There are two ways how data can be sent through an active event stream: 1. By sending a prebuilt event by calling `Stream\EventStream::sendEvent()`. 2. By sending a plain message by calling `Stream\EventStream::sendMessage()`. Events can be generated by implementing the [`Event\Event`](src/Event/Event.php)interface. Each event must provide an event name and JSON-serializable event data. πŸ§‘β€πŸ’» Contributing ---------------- [](#‍-contributing) Please have a look at [`CONTRIBUTING.md`](CONTRIBUTING.md). ⭐ License --------- [](#-license) This project is licensed under [GNU General Public License 3.0 (or later)](LICENSE). ### Health Score 55 β€” FairBetter than 97% of packages Maintenance81 Actively maintained with recent releases Popularity41 Moderate usage in the ecosystem Community17 Small or concentrated contributor base Maturity68 Established project with proven stability Bus Factor1 Top contributor holds 82.8% of commits β€” single point of failure How is this calculated?**Maintenance (25%)** β€” Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window. **Popularity (30%)** β€” Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores. **Community (15%)** β€” Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement. **Maturity (30%)** β€” Project age, version count, PHP version support, and release stability. ### Release Activity Cadence Every ~221 days Total 5 Last Release 227d ago Major Versions 1.1.1 β†’ 2.0.02025-11-18 PHP version history (4 changes)1.0.0PHP ~8.1.0 || ~8.2.0 1.1.0PHP ~8.1.0 || ~8.2.0 || ~8.3.0 1.1.1PHP ~8.1.0 || ~8.2.0 || ~8.3.0 || ~8.4.0 2.0.0PHP ~8.2.0 || ~8.3.0 || ~8.4.0 || ~8.5.0 ### Community Maintainers ![](https://avatars.githubusercontent.com/u/16313625?v=4)[Elias HΓ€ußler](/maintainers/eliashaeussler)[@eliashaeussler](https://github.com/eliashaeussler) --- Top Contributors [![renovate[bot]](https://avatars.githubusercontent.com/in/2740?v=4)](https://github.com/renovate[bot] "renovate[bot] (477 commits)")[![eliashaeussler](https://avatars.githubusercontent.com/u/16313625?v=4)](https://github.com/eliashaeussler "eliashaeussler (99 commits)") --- Tags event-sourceevent-streamsse ### Code Quality TestsPHPUnit ### Embed Badge ![Health badge](/badges/eliashaeussler-sse/health.svg) ``` [![Health](https://phpackages.com/badges/eliashaeussler-sse/health.svg)](https://phpackages.com/packages/eliashaeussler-sse) ``` ### Alternatives [guzzlehttp/psr7 PSR-7 message implementation that also provides common utility methods 8.0k1.1B4.0k](/packages/guzzlehttp-psr7)[flow-php/flow PHP ETL - Extract Transform Load - Data processing framework 85036.3k](/packages/flow-php-flow)[telnyx/telnyx-php Official Telnyx PHP SDK β€” APIs for Voice, SMS, MMS, WhatsApp, Fax, SIP Trunking, Wireless IoT, Call Control, and more. 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