Yii2 Application Development Cookbook - Third Edition

Using multiple configurations to simplify the deployment

The Advanced application template uses different configuration files for each of its applications:

common
    config
        main.php
        main-local.php
        params.php
        params-local.php
console
    config
        main.php
        main-local.php
        params.php
        params-local.php
backend
    config
        main.php
        main-local.php
        params.php
        params-local.php
frontend
    config
        main.php
        main-local.php
        params.php
        params-local.php

Each entry web/index.php script merges own set of configuration files:

$config = yii\helpers\ArrayHelper::merge( require(__DIR__ . '/../../common/config/main.php'), require(__DIR__ . '/../../common/config/main-local.php'), require(__DIR__ . '/../config/main.php'), require(__DIR__ . '/../config/main-local.php') ); $application = new ...