You can get the hostname, "drupal8.local", directly from the getHost() request:

$host = \Drupal::request()->getHost(); 

You can get the hostname, "drupal8.local", directly from the getHost() request:

$host = \Drupal::request()->getHost(); 

In some cases you might want to get the schema as well, fx https://drupal8.local:

$host = \Drupal::request()->getSchemeAndHttpHost(); 

You can get the hostname directly from the request:

$host = \Drupal::request()->getHost(); 

You can get the hostname, "drupal8.local", directly from the getHost() request:

$host = \Drupal::request()->getHost();