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Informations about the package key-value

KeyValue

KeyValue provides an interface for managing associative arrays as a collection of key-value pairs.

It handles common but often complex operations like confirming membership and overwriting nested values in multi-dimensional arrays. Like so:

KeyValue is one of a number of tools I'm hoping to extract from older, larger projects.

Installation

To install this library with Composer, type:

Local installation is possible using the repositories block of your composer.json. For instance:

Usage

KeyValue collections are associative arrays, with mixed-type values saved at keys. Keys must be strings:

If a KeyValue item's value is an array, the key can include a slash to access a value at the second level of the array:

To get started, initiate a new KeyValue collection:

A collection can also be initiated with values:

Set a value or many values:

Confirm that any values have been set:

Confirm that a key exists, or that a value has been set at a given key:

Get a value for a given key:

Get all values for all keys, or only the keys, or only the values:

Remove an item (and confirm the deletion):

Reset the collection to null (and confirm the reset):

Reset the collection to null (and confirm the reset):

Confirm the collection is empty:

Confirm the collection is a non-null empty array:

Confirm the collection is null (such as on init or after a reset):

Style

Readers will note that the code, tests, and examples in this README don't meet the requirements of PSR-2 or PSR-12. Instead, they follow conventions I adopted a long time ago to help me scan PHP code. While this personal style is expected to be followed in PRs on this repository, it's not a requirement of use.

License

Copyright (c) 2025 Justin Skolnick. MIT License.

All versions of key-value with dependencies

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Requires php Version >=8.0
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