GPX Runner's data decoded with PHP

Every runner with a sports watch carries a small data recorder on their wrist. After every run, it produces a GPX file: a detailed log of GPS positions, timestamps, elevation, and often heart rate. Most runners glance at the summary on their phone: distance, time, average pace, and move on. But that GPX file holds much more. With the hi-folks/statistics PHP package, you can extract per-kilometer splits and apply real statistical analysis to your running performance, from pacing consistency to elevation impact, cardiac drift to long-term improvement trends. In this article, we will parse a GPX file, build per-kilometer splits, and analyze a 10K run step by step using descriptive statistics, correlation, regression, outlier detection, and more. Installing the package composer require hi-folks/statistics The package requires PHP 8.2+ and is available on GitHub: https://github.com/Hi-Folks/statistics . What is inside a GPX file? A GPX (GPS Exchange Format) file is XML. Every sport watch —