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zelenin/glicko2
===============

A PHP implementation of Glicko2 rating system

1.0.0(10y ago)82.0k7[1 PRs](https://github.com/zelenin/glicko2/pulls)MITPHPPHP >=5.4.0

Since May 2Pushed 10y ago2 watchersCompare

[ Source](https://github.com/zelenin/glicko2)[ Packagist](https://packagist.org/packages/zelenin/glicko2)[ Docs](https://github.com/zelenin/glicko2)[ RSS](/packages/zelenin-glicko2/feed)WikiDiscussions master Synced 1mo ago

READMEChangelogDependencies (1)Versions (2)Used By (0)

Glicko2
=======

[](#glicko2)

A PHP implementation of [Glicko2 rating system](http://www.glicko.net/glicko.html)

Installation
------------

[](#installation)

### Composer

[](#composer)

The preferred way to install this extension is through [Composer](http://getcomposer.org/).

Either run

```
php composer.phar require zelenin/glicko2 "~1.0.0"

```

or add

```
"zelenin/glicko2": "~1.0.0"

```

to the require section of your `composer.json`

Usage
-----

[](#usage)

Create two players with current ratings:

```
use Zelenin\Glicko2\Glicko2;
use Zelenin\Glicko2\Match;
use Zelenin\Glicko2\MatchCollection;
use Zelenin\Glicko2\Player;

$glicko = new Glicko2();

$player1 = new Player(1700, 250, 0.05);
$player2 = new Player();

$match = new Match($player1, $player2, 1, 0);
$glicko->calculateMatch($match);

$match = new Match($player1, $player2, 3, 2);
$glicko->calculateMatch($match);

// or

$matchCollection = new MatchCollection();
$matchCollection->addMatch(new Match($player1, $player2, 1, 0));
$matchCollection->addMatch(new Match($player1, $player2, 3, 2));
$glicko->calculateMatches($matchCollection);

$newPlayer1R = $player1->getR();
$newPlayer2R = $player2->getR();
```

Author
------

[](#author)

[Aleksandr Zelenin](https://github.com/zelenin/), e-mail:

###  Health Score

32

—

LowBetter than 71% of packages

Maintenance20

Infrequent updates — may be unmaintained

Popularity27

Limited adoption so far

Community11

Small or concentrated contributor base

Maturity58

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

Unknown

Total

1

Last Release

3659d ago

### Community

Maintainers

![](https://www.gravatar.com/avatar/0de51e0d5cd7141a2189ae926d4a3c449d5d41fda7c6b63b08869eb3c1e53b9a?d=identicon)[zelenin](/maintainers/zelenin)

---

Top Contributors

[![zelenin](https://avatars.githubusercontent.com/u/1427885?v=4)](https://github.com/zelenin "zelenin (4 commits)")

---

Tags

Ratingrankingglickoglicko2

###  Code Quality

TestsPHPUnit

### Embed Badge

![Health badge](/badges/zelenin-glicko2/health.svg)

```
[![Health](https://phpackages.com/badges/zelenin-glicko2/health.svg)](https://phpackages.com/packages/zelenin-glicko2)
```

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