((exclusive)) - Config.php

A config.php file is a central configuration script used in PHP-based web applications to store global settings, sensitive credentials, and environmental variables. By isolating these parameters in a single file, developers can manage their entire application's behavior—from database connections to security keys—without hardcoding values into individual logic files. Core Purpose and Contents

// Include other configuration files require_once 'database.php'; require_once 'security.php'; config.php

• Move secrets to environment variables or secret manager.
• Return a config array rather than defining globals.
• Restrict access and never commit secrets.
• Validate config at startup and include CI secret scanning.
• Document config keys and maintain environment-specific overrides.

Most configuration files follow a simple key-value structure using either constants or arrays. A standard setup typically includes three major components: A config

Database Credentials

: Hostname, database name, username, and password. Global Paths : Root folder locations and site URLs. Move secrets to environment variables or secret manager