Config.php Guide

Let’s address the elephant in the room. The single most dangerous mistake beginner developers make is placing config.php inside the web root (e.g., public_html, www, or htdocs).

config.php is commonly used in PHP applications as a central configuration file that stores settings required for the application to run. Typical responsibilities include database connection parameters, environment-specific settings (development, staging, production), application constants, error/reporting configuration, and third-party API keys or endpoints. config.php

Moving an application from a local development server (XAMPP) to a staging server (a VPS) to a production cluster (AWS) requires changing environment-specific values. A single config.php (or an environment-aware version of it) makes this trivial. Let’s address the elephant in the room