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Example code of launchdarkly/openfeature-server

Informations about the package openfeature-server

LaunchDarkly OpenFeature provider for the Server-Side SDK for PHP

Run CI Packagist Documentation

This provider allows for using LaunchDarkly with the OpenFeature SDK for PHP.

This provider is designed primarily for use in multi-user systems such as web servers and applications. It follows the server-side LaunchDarkly model for multi-user contexts. It is not intended for use in desktop and embedded systems applications.

LaunchDarkly overview

LaunchDarkly is a feature management platform that serves over 100 billion feature flags daily to help teams build better software, faster. Get started using LaunchDarkly today!

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Supported PHP versions

This version of the LaunchDarkly provider works with PHP 8.1 and above.

Getting started

Requisites

Example composer dependencies:

Usage

Refer to the SDK reference guide for instructions on getting started with using the SDK.

For information on using the OpenFeature client please refer to the OpenFeature Documentation.

OpenFeature Specific Considerations

LaunchDarkly evaluates contexts, and it can either evaluate a single-context, or a multi-context. When using OpenFeature both single and multi-contexts must be encoded into a single EvaluationContext. This is accomplished by looking for an attribute named kind in the EvaluationContext.

There are 4 different scenarios related to the kind:

  1. There is no kind attribute. In this case the provider will treat the context as a single context containing a "user" kind.
  2. There is a kind attribute, and the value of that attribute is "multi". This will indicate to the provider that the context is a multi-context.
  3. There is a kind attribute, and the value of that attribute is a string other than "multi". This will indicate to the provider a single context of the kind specified.
  4. There is a kind attribute, and the attribute is not a string. In this case the value of the attribute will be discarded, and the context will be treated as a "user". An error message will be logged.

The kind attribute should be a string containing only contain ASCII letters, numbers, ., _ or -.

The OpenFeature specification allows for an optional targeting key, but LaunchDarkly requires a key for evaluation. A targeting key must be specified for each context being evaluated. It may be specified using either targetingKey, as it is in the OpenFeature specification, or key, which is the typical LaunchDarkly identifier for the targeting key. If a targetingKey and a key are specified, then the targetingKey will take precedence.

There are several other attributes which have special functionality within a single or multi-context.

Examples

A single user context

A single context of kind "organization"

A multi-context containing a "user" and an "organization"

Setting private attributes in a single context

Setting private attributes in a multi-context

Learn more

Check out our documentation for in-depth instructions on configuring and using LaunchDarkly. You can also head straight to the complete reference guide for this SDK.

The authoritative description of all properties and methods is in the php documentation.

Contributing

We encourage pull requests and other contributions from the community. Check out our contributing guidelines for instructions on how to contribute to this SDK.

About LaunchDarkly

All versions of openfeature-server with dependencies

PHP Build Version
Package Version
Requires php Version >=8.1
guzzlehttp/guzzle Version ^7
launchdarkly/server-sdk Version ^6.2
myclabs/php-enum Version >1.8
open-feature/sdk Version ^2.0
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