wp-config.php

define('WP_STAGE', 'local');

$overrideFile = dirname(__FILE__) . '/wp-config-' . WP_STAGE . '.php';
if (file_exists($overrideFile)) {
    require_once $overrideFile;
} else {
    # Database Configuration
    define('DB_NAME', 'app_db');
    define('DB_USER', 'app_user');
    define('DB_PASSWORD', 'app_user_password');
    define('DB_HOST', '127.0.0.1');
    define('DB_CHARSET', 'utf8');
    $table_prefix = 'wp_';
}