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renanvalente/elo-rating
=======================

A PHP implementation of Elo rating system

13PHP

Since Jul 16Pushed 5y ago1 watchersCompare

[ Source](https://github.com/renanvalente/elo-rating)[ Packagist](https://packagist.org/packages/renanvalente/elo-rating)[ RSS](/packages/renanvalente-elo-rating/feed)WikiDiscussions master Synced today

READMEChangelog (1)DependenciesVersions (1)Used By (0)

Elo Rating PHP
==============

[](#elo-rating-php)

A PHP class which implements the [Elo rating system](https://en.wikipedia.org/wiki/Elo_rating_system).

Install with composer
=====================

[](#install-with-composer)

`composer require renanvalente/elo-rating dev-master`

Link to Packagist.org:

Usage
=====

[](#usage)

```
use 'RenanValente/Rating/Rating';
// require 'src/Rating/Rating.php';

// player A elo = 1000
// player B elo = 2000
// player A lost
// player B win
// kfactor default system 32

$rating = new Rating(1000, 2000, Rating::LOST);

$results = $rating->getNewRatings();

echo "New rating for player A: " . $results['a'] . "";
echo "New rating for player B: " . $results['b'] . "";

// player A elo = 1000
// player B elo = 2000
// player A draw
// player B draw
// kfactor default system 32

$rating = new Rating(1000, 2000);

$results = $rating->getNewRatings();

echo "New rating for player A: " . $results['a'] . "";
echo "New rating for player B: " . $results['b'] . "";

// player A elo = 1000
// player B elo = 2000
// player A win
// player B lost
// kfactor default system 32

$rating = new Rating(1000, 2000, Rating::WIN);

$results = $rating->getNewRatings();

echo "New rating for player A: " . $results['a'] . "";
echo "New rating for player B: " . $results['b'] . "";

// player A elo = 1500
// player B elo = 2000
// player A lost
// player B win
// kfactor config rules

$rating = new Rating(
    1500, // player A elo
    2000, // player B elo
    Rating::LOST, // player A lost
    [
        'default' => 32, // KFactor default
        'rules' => [  // Sample league scoring system
            1000 => 25, // Bronze
            2000 => 16, // Silver
            3000 => 10, // Gold
            4500 => 5, // Diamond
        ]
    ]);

$results = $rating->getNewRatings();

echo "New rating for player A: " . $results['a'] . "";
echo "New rating for player B: " . $results['b'] . "";

// player A elo = 980
// players B elo = [2000, 1000, 1500, 2200]
// player A won all
// player B everyone lost
// kfactor config rules

$rating = new Rating(
    980, // player A elo
    [2000, 1000, 1500, 2200], // player B elo
    Rating::WIN, // player A won all
    [
        'default' => 32, // KFactor default
        'rules' => [  // Sample league scoring system
            1000 => 25, // Bronze
            2000 => 16, // Silver
            3000 => 10, // Gold
            4500 => 5, // Diamond
        ]
    ]);

$results = $rating->getNewRatings();

echo "New rating for player A: " . $results['a'] . "";
echo "New rating for player B: " . implode(' | ', $results['b']) . "";

// player A elo = 1500
// players B elo = [2000, 1000, 1500, 2200]
// player A config rules
// player B config rules
// kfactor config rules

$rating = new Rating(
    1500, // player A elo
    [2000, 1000, 1500, 2200], // player B elo
    [Rating::WIN, Rating::LOST, Rating::DRAW, Rating::WIN], // player A won all
    [
        'default' => 32, // KFactor default
        'rules' => [  // Sample league scoring system
            1000 => 25, // Bronze
            2000 => 16, // Silver
            3000 => 10, // Gold
            4500 => 5, // Diamond
        ]
    ]);

$results = $rating->getNewRatings();

echo "New rating for player A: " . $results['a'] . "";
echo "New rating for player B: " . implode(' | ', $results['b']) . "";

```

---

Credits
=======

[](#credits)

Developed by [Renan Valente](https://github.com/renanvalente/) based on the development of [Michal Chovanec](https://github.com/Chovanec/elo-rating).

###  Health Score

17

—

LowBetter than 6% of packages

Maintenance20

Infrequent updates — may be unmaintained

Popularity5

Limited adoption so far

Community7

Small or concentrated contributor base

Maturity33

Early-stage or recently created project

 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.

### Community

Maintainers

![](https://avatars.githubusercontent.com/u/23225254?v=4)[Renan Valente](/maintainers/renanvalente)[@renanvalente](https://github.com/renanvalente)

---

Top Contributors

[![renanvalente](https://avatars.githubusercontent.com/u/23225254?v=4)](https://github.com/renanvalente "renanvalente (3 commits)")

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![Health badge](/badges/renanvalente-elo-rating/health.svg)

```
[![Health](https://phpackages.com/badges/renanvalente-elo-rating/health.svg)](https://phpackages.com/packages/renanvalente-elo-rating)
```

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