PHP Hashing

function secure_hash($data) {
  $salt = '$2a$07$hjbJGKhJju8QljKIgy789g7Y&^I%9ghu%$';
  //$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
  return crypt($data, $salt);
}