PHP Constants

Your web/index.php file can define certain PHP constants, which Craft’s bootstrap script will check for while loading and configuring Craft.

CRAFT_BASE_PATH

The path to the base directory that Craft will look for config/, templates/, and other directories within by default. (It is assumed to be the parent of the vendor/ folder by default.)

// Tell Craft to look for config/, templates/, etc., two levels up from here
define('CRAFT_BASE_PATH', dirname(__DIR__, 2));

CRAFT_COMPOSER_PATH

The path to the composer.json file. (It is assumed to live within the base directory by default.)

define('CRAFT_COMPOSER_PATH', 'path/to/composer.json');

CRAFT_CONFIG_PATH

The path to the config/ folder. (It is assumed to live within the base directory by default.)

CRAFT_CONTENT_MIGRATIONS_PATH

The path to the migrations/ folder used to store content migrations. (It is assumed to live within the base directory by default.)

CRAFT_ENVIRONMENT

The environment name that multi-environment configs can reference when defining their environment-specific config arrays. ($_SERVER['SERVER_NAME'] will be used by default.)

// Set the environment from the ENVIRONMENT env var, or default to 'production'
define('CRAFT_ENVIRONMENT', getenv('ENVIRONMENT') ?: 'production');

CRAFT_LICENSE_KEY

Your Craft license key, if for some reason that must be defined by PHP rather than a license key file. (Don’t set this until you have a valid license key.)

CRAFT_LICENSE_KEY_PATH

The path that Craft should store its license key file, including its filename. (It will be stored as license.key within your config/ folder by default.)

CRAFT_SITE

The Site handle or ID that Craft should be serving from this index.php file. (Only set this if you have a good reason to. Craft will automatically serve the correct site by inspecting the requested URL, unless this is set.)

// Show the German site
define('CRAFT_SITE', 'de');

CRAFT_STORAGE_PATH

The path to the storage/ folder. (It is assumed to live within the base directory by default.)

CRAFT_TEMPLATES_PATH

The path to the templates/ folder. (It is assumed to live within the base directory by default.)

CRAFT_TRANSLATIONS_PATH

The path to the translations/ folder. (It is assumed to live within the base directory by default.)

CRAFT_VENDOR_PATH

The path to the vendor/ folder. (It is assumed to live 4 directories up from the bootstrap script by default.)