Visualizing Facebook’s PHP Codebase

This post details the development of a novel, interactive visualization tool to understand the interdependencies within Facebook's large-scale PHP codebase (over 10,000 modules). The visualization uses a layered approach, coloring modules by dependency count, and provides interactive exploration of direct and transitive dependencies. This tool was developed as a Hackathon project to address the complexity of visualizing such a large system, offering insights into module granularity and dependency management.