This is my multi-environment config setup for Craft CMS. There are many like it, but this one is mine.

Hearty makes it easy to set up Craft installs that are easy to move and deploy between different environments.

With Hearty, the current environment is determined based on the host – i.e. $_SERVER[ 'SERVER_NAME' ] – and a map of URLs and environment keys. The idea is to "down-grade" general.php and db.php to just contain default/common settings; placing any additional environment specific settings (such as db credentials etc) in separate files following the template config.{environment_key}.php.

Note: Some (many?) ideas borrowed from BarrelStrength's config @ https://github.com/BarrelStrength/Craft-Multi-Environment-Config. A few main differences between BarrelStrength's setup and mine include:

• Hearty's environment config files combine database and general settings
• Hearty's environment config files are kept at root level of the /config folder

With Hearty, your /config folder will contain some additional files, specifically hearty.php (where your different environments should be declared) as well as any environment specific config files (config.{environment}.php).

I like to keep the /config folder outside my Craft folder, and to place both above the web root.

To begin using Hearty, open up hearty.php, declare your environment URLs and keys, and then include the file in index.php (or just use the index.php example file included with Hearty):

@include('../config/hearty.php');

Please note that multiple environment URLs should be either comma-separated, or a multi-dimensional array:

$envs = [
    'dev' => ['dev.example1.com', 'dev.example2.com'],
    'stage' => 'stage.example1.com',
    'prod' => 'example.com,www.example.com',
];

For local development, Hearty ignores the $env array and just looks for a file called config.local.php. If that file is found, local environment is assumed, basically enabling you to use whatever URL and config settings you want for local environments. This is a good idea for teams working on the same application, enabling everyone to easily use their own URL and settings locally. If you need common config settings for local environments, you can add a "local" environment to general.php and/or db.php.

It's a super good idea to gitignore config.local.php.