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: A more traditional (and often discouraged) method involves declaring variables like $db_host = 'localhost'; which are then accessed via include . Specific Use Cases
Then config.php reads from the environment: config.php
// Database settings $db_host = 'localhost'; $db_name = 'mydatabase'; $db_username = 'myuser'; $db_password = 'mypassword'; $db_port = 3306;
<?php // Load environment variables (using vlucas/phpdotenv) require_once __DIR__ . '/../vendor/autoload.php'; $dotenv = Dotenv\Dotenv::createImmutable(__DIR__); $dotenv->safeLoad(); // safeLoad doesn't fail if .env missing This public link is valid for 7 days
A minimal example:
Your config.php (or at least the version in your repository) must never contain production secrets. Can’t copy the link right now
$common = [ 'app' => ['name' => 'My App', 'timezone' => 'UTC'], // settings shared across all environments ];
Given the sensitivity of the data stored within, securing config.php is non-negotiable. One of the primary reasons to isolate configuration is to keep it out of the publicly accessible web root, preventing a server misconfiguration from exposing it to the world via a browser. An exposed config.php file leads directly to a full compromise: attackers can steal database credentials, inject malware, create admin users, and more.