---
title: PHP-SDK - 3.3.1
slug: feature-experimentation/release-notes/php-sdk-3-3-1
docTags: 
createdAt: 2026-07-20T15:45:23.855Z
---

## 3.3.1

May 29th, 2020

### Bug Fixes:

\- This release adds an SDK key param to Optimizely constructor. The user can now create an Optimizely instance only using an SDK key. Previously the user was required to create a HTTPProjectConfigManager, and pass it as a config manager in the constructor. (\[#189]\([https://github.com/optimizely/php-sdk/pull/189](https://github.com/optimizely/php-sdk/pull/189)), \[#193]\([https://github.com/optimizely/php-sdk/pull/193](https://github.com/optimizely/php-sdk/pull/193)))

[https://github.com/optimizely/php-sdk/releases/tag/3.3.1](https://github.com/optimizely/php-sdk/releases/tag/3.3.1)