How is localization by subdomains implemented?

Question

Internationalization and localization

Good evening everyone.
Please share how localization is implemented using subdomains?
For example, for the Russian language - ru.site.com, English - en.site.com and so on.
I can't find proper information. Thanks in advance)

Answer 1

Something like this:
A single Document Root is installed for all subdomains, and then in the application:

$url_array = explode('.', parse_url($request->url(), PHP_URL_HOST));
$subdomain = $url_array[0];

...

$languages = ['en','de'];
if (in_array($langcode, $languages)){
    App::setLocale($langcode);
}

Examples:
https://kovah.me/en/laravel-5-localization-based-o...
https://github.com/LaurentEsc/Laravel-Subdomain-Lo...

Answer 2

For example:
When entering the main domain, the language is determined in the middleware:
By this value, the middleware goes to The database looks to see if there is such a language in the system, and puts the value, for example, in a cookie/session and/or redirects to a subdomain with the desired location, then displays already localized content