It is often beneficial to have different settings depending on where you are running the site. For instance, you might want to enable debug mode when in development, but not in production.

The .env file

Environment variables are contained in a file named .env, kept in the root of your site. Many system settings can be affected here, and you can also set your own variables to use in any of Statamic’s system settings.

The .env syntax is a key/value pair that looks exactly like this:


You should not commit your .env file to version control. It may contain confidential information (such as API keys), and each developer and/or server may require a different configuration setting.

If you are working on a team, you may wish to continue including a env.example file filled with placeholder values. This is common best practice, allowing other developers to get up and running quickly.

Defining Environments

To specify which environment your site is running in, add an APP_ENV to your .env:


If an APP_ENV has not been defined, Statamic will assume the site is running in production. You may customize the default environment by overriding it in your index.php.

$environment = 'dev';

Environment Settings

There are two options when it comes to environment-specific settings. You can mix-and-match them, using whichever approach feels most logical to you.

Option 1: Interpolation

The first option is to add the .env-based variables directly into settings files using the {env‌:} helper.

For example, in debug.yaml, you could do this:

debug: "{env‌:APP_DEBUG}"

and set APP_DEBUG=true in your .env file.

You may use the variable in the middle of a string, for example:

greeting: "Hello {env:NAME}"

When interpolating, make sure to wrap your value in quotes.

Some of the env: code examples on this page use an invisible character to prevent it from actually rendering the environment variable. If you copy/paste directly from here, be sure to delete it - or just write it by hand!

Option 2: Environment files

The second option is to leverage an environment system settings file, located in site/settings/environments/. Each yaml file here becomes an environment name, and any data defined here is added to the cascade when running in that specific environment.

For instance:

    debug: true
    debug_bar: true
    slices: 20

Anything nested under settings would override values in the corresponding yaml file. In this example, debug and debug_bar will override the values in debug.yaml.

Anything nested under addons would override values in the corresponding addon’s yaml file. In this example, slices will override the value in the bacon addon’s setting file.

You may also interpolate in your environment files, if you wish.

    debug: "{env:APP_DEBUG}"

Editing environment settings

When an environment setting has been used, it becomes uneditable through the control panel. This provides clarity in the UI as to where the value is coming from.

Last modified on March 27, 2019