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nanokaweb/spaced-repetition
===========================

Spaced repetition algorithms (SuperMemo algorithm SM-2)

0.1.1(6y ago)57551[1 PRs](https://github.com/nanokaweb/spaced-repetition/pulls)MITPHPPHP ^7.2

Since May 4Pushed 1y ago1 watchersCompare

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

READMEChangelogDependencies (3)Versions (4)Used By (0)

Spaced Repetition
=================

[](#spaced-repetition)

Library that implements the SM-2 algorithm in PHP. See [www.supermemo.com/english/ol/sm2.htm](http://www.supermemo.com/english/ol/sm2.htm) for more details.

Install
-------

[](#install)

```
# Install with composer
$ composer require nanokaweb/spaced-repetition
```

Usage
-----

[](#usage)

```
$sm2 = new SM2();
$sm2->processRecallResult(4);
```

###  Health Score

28

—

LowBetter than 54% of packages

Maintenance32

Infrequent updates — may be unmaintained

Popularity20

Limited adoption so far

Community8

Small or concentrated contributor base

Maturity43

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 ~0 days

Total

2

Last Release

2199d ago

### Community

Maintainers

![](https://www.gravatar.com/avatar/a3f74b50602ad1a57ea0e8efa562d008b416ebfb01c4721df04e614b27a028fd?d=identicon)[nanokaweb](/maintainers/nanokaweb)

---

Top Contributors

[![stephane-monnot](https://avatars.githubusercontent.com/u/6066368?v=4)](https://github.com/stephane-monnot "stephane-monnot (4 commits)")

---

Tags

sm2spaced repetition

###  Code Quality

TestsPHPUnit

Code StylePHP CS Fixer

### Embed Badge

![Health badge](/badges/nanokaweb-spaced-repetition/health.svg)

```
[![Health](https://phpackages.com/badges/nanokaweb-spaced-repetition/health.svg)](https://phpackages.com/packages/nanokaweb-spaced-repetition)
```

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