Merging another web.php file in config/web.php of yii2

Question

We are two groups developing a project made in Yii2 basic. The problem we are facing right now is we have different web.php under config. Our group would like to include our web.php (which was renamed to extras.php) inside the web.php of another group. The difference is we added variables under components of $config of web.php. Yes, we can manually add our new variables under components of $config from the other team but we prefer to use separate files that is why we renamed the other web.php to extras.php.

A small preview of web.php looks like this

$params = require(__DIR__ . '/params.php');

$config = [
    'id' => 'basic',
    'basePath' => dirname(__DIR__),
    'bootstrap' => ['log'],
    'language'=>  isset($_SESSION['language_local']) ? $_SESSION['language_local']:'en',
    'components' => [
        'nagios' => [
                    'class' =>  'app\components\nagios',
        ],
        'hostlistsql' => [
                   'class' =>  'app\components\hostlistsql',
        ],
        'request' => [empty) - this is required by cookie validation
            'cookieValidationKey' => 'nYwdMpu-dw004qwFRZmqZOzzC3xdnL8b',
        ],
        'cache' => [
            'class' => 'yii\caching\FileCache',
        ],
    ],
    'params' => $params,
];

extras.php looks like this

$params = require(__DIR__ . '/params.php');

$config = [
    'id' => 'basic',
    'basePath' => dirname(__DIR__),
    'bootstrap' => ['log'],
    'language'=>  isset($_SESSION['language_local']) ? $_SESSION['language_local']:'en',
    'components' => [
        'user_functions' => [
                    'class' =>  'app\components\UserFunctions',
        ],
        'user_extras' => [
                   'class' =>  'app\components\UserExtras',
        ],
        'request' => [empty) - this is required by cookie validation
            'cookieValidationKey' => 'nYwdMpu-dw004qwFRZmqZOzzC3xdnL8b',
        ],
        'cache' => [
            'class' => 'yii\caching\FileCache',
        ],
    ],
    'params' => $params,
];

What approach should we take to include extras.php inside web.php?

EDIT:

SOLUTION: Inside web/index.php has

$config = require(__DIR__ . '/../config/web.php');

I changed it instead to

$config = yii\helpers\ArrayHelper::merge(
    require(__DIR__ . '/../config/web.php'),
    require(__DIR__ . '/../config/extras.php')
);

Answer 1

Why would you want to include extras.php inside web.php instead of just merging them?

Here is how the same thing is handled in yii2 advanced https://github.com/yiisoft/yii2-app-advanced/blob/master/environments/dev/frontend/web/index.php

As you can see common..main.php is merged with common..main-local.php is merged with frontend..main.php is merged with frontend..main-local.php

There are 4 files that are merged to get to the end 1 single config file. Eazy as pie.

If you really want to merge things inside web.php do a

$config = [....];
return yii\helpers\ArrayHelper::merge(
    $config,
    require(__DIR__ . 'extras.php'),
);