Abby: Minimal A/B Testing Library in PHP

Hello hunters! I just launched Abby - a simple but powerful PHP A/B testing library. The library lets you easily setup your experiments and their control and variation groups, track your visitors and assign them to a group, get detailed statistics including recommended sample sizes and determining the confidence of your results, including when an experiment have achieved statistical significance. The confidence is calculated using the z-score and p-value of your results, to see if the null hypothesis can be rejected. An accompanying minimum sample size is also calculated using a two-tailed test to control the false discovery rate. Abby is dependency free, and completely database agnostic, meaning it simply works with data you provide it with, and exposes a variety of methods for you to store the result in your own storage of choice. See more here - https://github.com/andreekeberg/...