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Example code of rasuvaeff/yii3-ab-testing-db

Informations about the package yii3-ab-testing-db

rasuvaeff/yii3-ab-testing-db

Stable Version Total Downloads Build Static Analysis PHP

Database-backed experiment provider for Yii3 A/B testing. Implements the ExperimentProvider interface from rasuvaeff/yii3-ab-testing and reads experiment configuration from a database table in a single query, so experiments can be toggled and reweighted at runtime without a deploy.

Using an AI coding assistant? llms.txt contains a compact API reference you can ingest in your prompt context.

Requirements

Installation

With Yii3 config-plugin this package binds ExperimentProvider automatically — do not also bind ExperimentProvider in your application or another backend, or yiisoft/config reports a Duplicate key error.

Database schema

Create the ab_experiments table (adjust types for your RDBMS):

Column Type Default Description
name VARCHAR(190) PK — Experiment name (core regex: /^[a-z][a-z0-9_-]*$/)
enabled BOOLEAN true Disabled experiment returns the fallback variant
salt VARCHAR(190) '' Empty string falls back to the experiment name
fallback_variant VARCHAR(190) '' Must be one of the variants keys
variants JSON/TEXT '{}' JSON object {"variant": weight}, non-negative integer weights

A row's variants looks like {"control":50,"green":50}. The total weight must be greater than zero and fallback_variant must match one of the keys, or the row is rejected with InvalidExperimentRowException.

Migration

The package ships a migration (migrations/) for yiisoft/db-migration. Register the source path in your app's config/params.php:

Then apply and revert it with Yii Console:

The table name defaults to ab_experiments and must match the table argument of DbExperimentProvider. To use a custom name, bind the migration constructor argument:

Usage

Basic DB provider

With PSR-16 caching

getExperiments() runs on every registry build (per request). Without caching that is a DB query per request — wrap the provider in CachedExperimentProvider:

Clear cache

API reference

Class Description
DbExperimentProvider Reads all experiments from DB in one SELECT *
CachedExperimentProvider PSR-16 decorator, caches the entire experiment set with TTL
InvalidExperimentRowException Thrown when a DB row has invalid structure or yields an invalid experiment

Security

Examples

See examples/ for runnable scripts.

Development

License

BSD-3-Clause. See LICENSE.md.

All versions of yii3-ab-testing-db with dependencies

PHP Build Version
Package Version
Requires php Version 8.3 - 8.5
ext-json Version *
psr/simple-cache Version ^3.0
rasuvaeff/yii3-ab-testing Version ^1.4
yiisoft/db Version ^2.0
yiisoft/db-migration Version ^2.0
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