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symfony/event-dispatcher
========================

Provides tools that allow your application components to communicate with each other by dispatching events and listening to them

v8.1.1(3w ago)8.6k1.0B↓20.2%6620MITPHPPHP &gt;=8.4.1

Since Sep 26Pushed 1w ago19 watchersCompare

[ Source](https://github.com/symfony/event-dispatcher)[ Packagist](https://packagist.org/packages/symfony/event-dispatcher)[ Docs](https://symfony.com)[ Fund](https://symfony.com/sponsor)[ GitHub Sponsors](https://github.com/fabpot)[ RSS](/packages/symfony-event-dispatcher/feed)WikiDiscussions 8.2 Synced 3d ago

READMEChangelog (10)Dependencies (42)Versions (645)Used By (20)

EventDispatcher Component
=========================

[](#eventdispatcher-component)

The EventDispatcher component provides tools that allow your application components to communicate with each other by dispatching events and listening to them.

Sponsor
-------

[](#sponsor)

This package is looking for a [backer](https://symfony.com/backers).

Help Symfony by [sponsoring](https://symfony.com/sponsor) its development!

Resources
---------

[](#resources)

- [Documentation](https://symfony.com/doc/current/components/event_dispatcher.html)
- [Contributing](https://symfony.com/doc/current/contributing/index.html)
- [Report issues](https://github.com/symfony/symfony/issues) and [send Pull Requests](https://github.com/symfony/symfony/pulls)in the [main Symfony repository](https://github.com/symfony/symfony)

###  Health Score

89

—

ExcellentBetter than 100% of packages

Maintenance97

Actively maintained with recent releases

Popularity85

Widely adopted with strong download metrics

Community61

Healthy contributor diversity

Maturity100

Battle-tested with a long release history

 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 ~8 days

Recently: every ~1 days

Total

645

Last Release

25d ago

Major Versions

v7.4.8 → v8.0.82026-03-30

v6.4.37 → v7.4.92026-04-18

v7.4.9 → v8.0.92026-04-18

6.4.x-dev → v7.4.142026-06-06

7.4.x-dev → v8.0.142026-06-06

PHP version history (15 changes)2.0.4PHP &gt;=5.3.2

v2.1.0PHP &gt;=5.3.3

v2.7.0-BETA1PHP &gt;=5.3.9

v3.0.1PHP &gt;=5.5.9

v3.3.8PHP ^5.5.9|&gt;=7.0.8

v4.0.0-BETA1PHP ^7.1.3

v5.0.0-BETA2PHP ^7.2.9

v5.0.2PHP ^7.2.5

v4.4.9PHP &gt;=7.1.3

v5.0.9PHP &gt;=7.2.5

v6.0.0-BETA1PHP &gt;=8.0.2

v6.1.0-BETA1PHP &gt;=8.1

v7.0.0-RC1PHP &gt;=8.2

v8.0.0-BETA1PHP &gt;=8.4

v8.1.0-BETA1PHP &gt;=8.4.1

### Community

Maintainers

![](https://avatars.githubusercontent.com/u/47313?v=4)[Fabien Potencier](/maintainers/fabpot)[@fabpot](https://github.com/fabpot)

---

Top Contributors

[![nicolas-grekas](https://avatars.githubusercontent.com/u/243674?v=4)](https://github.com/nicolas-grekas "nicolas-grekas (461 commits)")[![fabpot](https://avatars.githubusercontent.com/u/47313?v=4)](https://github.com/fabpot "fabpot (404 commits)")[![derrabus](https://avatars.githubusercontent.com/u/1506493?v=4)](https://github.com/derrabus "derrabus (65 commits)")[![xabbuh](https://avatars.githubusercontent.com/u/1957048?v=4)](https://github.com/xabbuh "xabbuh (46 commits)")[![Tobion](https://avatars.githubusercontent.com/u/610090?v=4)](https://github.com/Tobion "Tobion (14 commits)")[![Seldaek](https://avatars.githubusercontent.com/u/183678?v=4)](https://github.com/Seldaek "Seldaek (13 commits)")[![jderusse](https://avatars.githubusercontent.com/u/578547?v=4)](https://github.com/jderusse "jderusse (9 commits)")[![chalasr](https://avatars.githubusercontent.com/u/7502063?v=4)](https://github.com/chalasr "chalasr (8 commits)")[![OskarStark](https://avatars.githubusercontent.com/u/995707?v=4)](https://github.com/OskarStark "OskarStark (6 commits)")[![ro0NL](https://avatars.githubusercontent.com/u/1047696?v=4)](https://github.com/ro0NL "ro0NL (6 commits)")[![keradus](https://avatars.githubusercontent.com/u/2716794?v=4)](https://github.com/keradus "keradus (5 commits)")[![GrahamCampbell](https://avatars.githubusercontent.com/u/2829600?v=4)](https://github.com/GrahamCampbell "GrahamCampbell (4 commits)")[![lyrixx](https://avatars.githubusercontent.com/u/408368?v=4)](https://github.com/lyrixx "lyrixx (4 commits)")[![dosten](https://avatars.githubusercontent.com/u/510842?v=4)](https://github.com/dosten "dosten (4 commits)")[![tigitz](https://avatars.githubusercontent.com/u/1524501?v=4)](https://github.com/tigitz "tigitz (4 commits)")[![dmaicher](https://avatars.githubusercontent.com/u/921145?v=4)](https://github.com/dmaicher "dmaicher (3 commits)")[![dunglas](https://avatars.githubusercontent.com/u/57224?v=4)](https://github.com/dunglas "dunglas (3 commits)")[![fancyweb](https://avatars.githubusercontent.com/u/3658119?v=4)](https://github.com/fancyweb "fancyweb (3 commits)")[![hason](https://avatars.githubusercontent.com/u/288535?v=4)](https://github.com/hason "hason (3 commits)")[![igorw](https://avatars.githubusercontent.com/u/88061?v=4)](https://github.com/igorw "igorw (3 commits)")

---

Tags

componentphpsymfonysymfony-component

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