The base URL of the Drupal installation. See also \Drupal\Core\DrupalKernel::initializeRequestGlobals() File core/globals.api.php, line 43 These are the global variables that Drupal uses. Code global $base_url;

The secure base URL of the Drupal installation. See also \Drupal\Core\DrupalKernel::initializeRequestGlobals() File core/globals.api.php, line 36 These are the global variables that Drupal uses. Code global $base_secure_url;

$base_root

The root URL of the host, excluding the path. See also \Drupal\Core\DrupalKernel::initializeRequestGlobals() File core/globals.api.php, line 29 These are the global variables that Drupal uses. Code global $base_root;

$base_path

The base path of the Drupal installation. This will at least default to '/'. See also \Drupal\Core\DrupalKernel::initializeRequestGlobals() File core/globals.api.php, line 22 These are the global variables that Drupal uses. Code global $base_path;