How to: Data Structure and Storage
*Libraries that implement data structure or storage techniques.*

* [CakePHP Collection](https://github.com/cakephp/collection) - A simple collections library.
* [Fractal](https://github.com/thephpleague/fractal) - A library for converting complex data structures to JSON output.
* [Ginq](https://github.com/akanehara/ginq) - Another PHP library based on .NET's LINQ.
* [JsonMapper](https://github.com/cweiske/jsonmapper) - A library that maps nested JSON structures onto PHP classes.
* [JSON Machine](https://github.com/halaxa/json-machine) - Provides iteration over huge JSONs using simple `foreach`
* [Knapsack](https://github.com/DusanKasan/Knapsack) - Collection library inspired by Clojure's sequences.
* [msgpack.php](https://github.com/rybakit/msgpack.php) - A pure PHP implementation of the [MessagePack](https://msgpack.org/) serialization format.
* [PINQ](https://github.com/TimeToogo/Pinq) - A PHP library based on .NET's LINQ (Language Integrated Query).
* [Serializer](https://github.com/schmittjoh/serializer) - A library for serializing and de-serializing data.
* [YaLinqo](https://github.com/Athari/YaLinqo) - Yet Another LINQ to Objects for PHP.
* [Laminas Serializer](https://github.com/laminas/laminas-serializer) - Another library for serialising and de-serialising data.