Get db name

hi sorry for english , there is a way to get db name ? 

i have this code to get db table :

Code:

       $db = \Config\Database::connect();

$tableList = array();


$query = $db->query("SHOW TABLES");
$results = $query->getResult();

foreach ($results as $row)
{
   $tableList[] =$row->Tables_in_name_of_db;
}

      $data['tableList']= $tableList;

Can i get the name to use in this method ? i know that db name are in .env but i want create a tool and i must get it

PHP Code:

$dbname = $db->database;