Feature Toggles in PHP

README.md

If you look on Packagist, the most popular packages for Feature toggles are:

1. qandidate/toggle "Feature toggling for your PHP application." (⬇️ 496.754 / ⭐ 362)
2. opensoft/rollout "Feature switches or flags for PHP" (⬇️ 354.269 / ⭐ 215)
3. flagception/flagception "Feature toggle on steroids." (⬇️ 139 265 / ⭐ 24)
4. joshuaestes/feature-toggle "Provides feature toggle functionality" (⬇️ 61.736 / ⭐ 32)
5. zumba/swivel "Strategy driven feature toggles" (⬇️ 49.954 / ⭐ 211)

Class API

These packages have the following class API:

qandidate/toggle

https://github.com/qandidate-labs/qandidate-toggle

$manager = new ToggleManager($features);
$manager->add(new Toggle('my_feature', $condition));

$manager->active('my_feature', $context)

opensoft/rollout

https://github.com/opensoft/rollout

$toggle = new Rollout($features);

$toggle->isActive('my_feature');
$toggle->isActive('my_feature', $context);

flagception/flagception

https://github.com/bestit/flagception-sdk

$manager = new FeatureManager($features);

$manager->isActive('my_feature');
$manager->isActive('my_feature', (new Context())->add('my_feature', $context));

joshuaestes/feature-toggle

https://github.com/JoshuaEstes/FeatureToggle

$manager = new FeatureContainer();
$manager->addFeature(FeatureBuilder::create('my_feature')->getFeature());

$manager->hasFeature('my_feature')->isEnabled();

zumba/swivel

https://github.com/zumba/swivel

$manager = new Manager(new Config($features, $bucket));
$manager->forFeature('my_feature');

Bonus!

Because it was one of the first, I'll also add etsy/feature

https://github.com/etsy/feature

Feature::isEnabled('my_feature')
Feature::variant('my_feature')
Feature::isEnabledFor('my_feature', $context)
Feature::variantFor('my_feature', $context)

Commonalities

The most common patterns seem to be to have either a FeatureToggle or Collection/Manager of FeatureToggles. Either of which can be asked for a specific feature to be active, optionally given a specific context. (Variants and Buckets are not in scope of this comparison yet).

The following are all more or less synonimous:

• active
• isActive
• isEnabled

Comparing these (either by stars or downloads) "active" seem to be the winner over "feature.