Doctrine\DBAL\Connection::getUsername PHP Method

    public function getUsername()
    {
        return isset($this->_params['user']) ? $this->_params['user'] : null;
    }

 public function getDsn()
 {
     $driver = $this->connection->getDriver()->getName();
     $user = $this->connection->getUsername();
     $pass = $this->connection->getPassword();
     $host = $this->connection->getHost();
     $db = $this->connection->getDatabase();
     return "{$driver}://{$user}:{$pass}@{$host}/{$db}";
 }