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th3n3rd/cartesian-product
=========================

Memory efficient Cartesian Product implementation

v1.0.0(5mo ago)13188.3k↑1151%52MITPHPPHP >=8.0CI passing

Since Apr 18Pushed 4mo agoCompare

[ Source](https://github.com/th3n3rd/cartesian-product)[ Packagist](https://packagist.org/packages/th3n3rd/cartesian-product)[ RSS](/packages/th3n3rd-cartesian-product/feed)WikiDiscussions master Synced 2w ago

READMEChangelog (1)Dependencies (4)Versions (5)Used By (2)

Cartesian Product
=================

[](#cartesian-product)

[![Latest Version](https://camo.githubusercontent.com/c394bf51b2ac92a060ada12ec5ecd99610a2c928ad05fbf042b7fc4578c16625/68747470733a2f2f696d672e736869656c64732e696f2f6769746875622f72656c656173652f7468336e3372642f63617274657369616e2d70726f647563742e7376673f7374796c653d666c61742d737175617265)](https://github.com/th3n3rd/cartesian-product/releases)[![Build Status](https://github.com/th3n3rd/cartesian-product/actions/workflows/ci.yml/badge.svg)](https://github.com/th3n3rd/cartesian-product/actions/workflows/ci.yml)[![Software License](https://camo.githubusercontent.com/55c0218c8f8009f06ad4ddae837ddd05301481fcf0dff8e0ed9dadda8780713e/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f6c6963656e73652d4d49542d627269676874677265656e2e7376673f7374796c653d666c61742d737175617265)](LICENSE)[![Total Downloads](https://camo.githubusercontent.com/b6ad178f1d7d66ed9d3ef392482bf7628b6c7325b9dd421c8d6b787ff683b171/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f64742f7468336e3372642f63617274657369616e2d70726f647563742e7376673f7374796c653d666c61742d737175617265)](https://packagist.org/packages/th3n3rd/cartesian-product)

**Memory efficient Cartesian Product implementation.**

It uses iterators in order to store only a specific tuple at a time, being able to compute even large combinations without affecting the memory footprint.

Install
-------

[](#install)

Via Composer

```
$ composer require th3n3rd/cartesian-product
```

Usage
-----

[](#usage)

The library can be used as an iterator:

```
use Nerd\CartesianProduct\CartesianProduct;

$cartesianProduct = CartesianProduct::empty()
    ->with(['a', 'b', 'c'])
    ->with(['d', 'e'])
;

// or you can use the `of` static method:
$cartesianProduct = CartesianProduct::of([
    ['a', 'b', 'c'],
    ['d', 'e'],
]);

foreach ($cartesianProduct as $index => $product) {
    printf("[%s] (%s)\n", $index, implode(',', $product));
}
```

You can also compute the whole result at once (not recommended for large sets):

```
$result = $cartesianProduct->toArray();
```

Testing
-------

[](#testing)

```
$ vendor/bin/phpunit
```

License
-------

[](#license)

The MIT License (MIT). Please see [License File](LICENSE) for more information.

###  Health Score

56

—

FairBetter than 97% of packages

Maintenance74

Regular maintenance activity

Popularity44

Moderate usage in the ecosystem

Community17

Small or concentrated contributor base

Maturity71

Established project with proven stability

 Bus Factor1

Top contributor holds 80.6% 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 ~1328 days

Total

4

Last Release

154d ago

Major Versions

v0.3.0 → v1.0.02026-03-16

PHP version history (2 changes)v0.1.0PHP >=5.3.3

v1.0.0PHP >=8.0

### Community

Maintainers

![](https://www.gravatar.com/avatar/a92f92d9fb7e0754a14817e107996130433464cd3c7101dc4ae6f11a87e6f351?d=identicon)[th3n3rd](/maintainers/th3n3rd)

---

Top Contributors

[![th3n3rd](https://avatars.githubusercontent.com/u/2188427?v=4)](https://github.com/th3n3rd "th3n3rd (25 commits)")[![sagikazarmark](https://avatars.githubusercontent.com/u/1226384?v=4)](https://github.com/sagikazarmark "sagikazarmark (5 commits)")[![Chris53897](https://avatars.githubusercontent.com/u/7104259?v=4)](https://github.com/Chris53897 "Chris53897 (1 commits)")

---

Tags

productcartesian

###  Code Quality

TestsPHPUnit

### Embed Badge

![Health badge](/badges/th3n3rd-cartesian-product/health.svg)

```
[![Health](https://phpackages.com/badges/th3n3rd-cartesian-product/health.svg)](https://phpackages.com/packages/th3n3rd-cartesian-product)
```

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