protected function createSalt() { $pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./'; $max = strlen($pool) - 1; $salt = ''; for ($i = 0; $i < $this->saltLength; ++$i) { $salt .= $pool[random_int(0, $max)]; } return $salt; }