Multiple development environments within wp-config

wp-config.php

<?

// Database settings
switch($_SERVER['SERVER_NAME']) {
  // Local Environment
  case 'localhost':
    define('DB_NAME', 'db_name');
    define('DB_USER', 'db_user');
    define('DB_PASSWORD', 'db_password');
    define('DB_HOST', 'localhost');
    break;
  // Production environment
  case 'www.domain.com':
  case 'domain.com':
    define('DB_NAME', 'db_name');
    define('DB_USER', 'db_user');
    define('DB_PASSWORD', 'db_password');
    define('DB_HOST', 'localhost');
    break;
}

// Authentication key: https://api.wordpress.org/secret-key/1.1/salt/
define('AUTH_KEY',         '');
define('SECURE_AUTH_KEY',  '');
define('LOGGED_IN_KEY',    '');
define('NONCE_KEY',        '');
define('AUTH_SALT',        '');
define('SECURE_AUTH_SALT', '');
define('LOGGED_IN_SALT',   '');
define('NONCE_SALT',       '');

// WordPress Database Table prefix.
$table_prefix  = 'wp_';

// WordPress Localized Language, defaults to English.
define('WPLANG', '');

// Absolute path to the WordPress directory.
if ( !defined('ABSPATH') )
  define('ABSPATH', dirname(__FILE__) . '/');

// Sets up WordPress vars and included files.
require_once(ABSPATH . 'wp-settings.php');