database.php file does not appear to contain a valid configuration array

[asaadhoussam]

The great features of the application, especially work with the ldap

It was assumed that the application of portable,
I work on the Windows platform, codeigniter 3.1.3, i have all the settings in a config file and in database file with suspicion is true
When do I turn the application on localhost server, shows me the following message:

An Error Was Encountered
Your C:\xampp\htdocs\skeleton\application\config/database.php file does not appear to contain a valid configuration array.
database.php contain:

$active_group = 'default';
$query_builder = TRUE;

$db['default'] = array(
'dsn' => '',
'hostname' => 'localhost',
'username' => 'root',
'password' => '',
'database' => 'skeleton',
'dbdriver' => 'mysqli',
'dbprefix' => '',
'pconnect' => FALSE,
'db_debug' => (ENVIRONMENT !== 'production'),
'cache_on' => FALSE,
'cachedir' => '',
'char_set' => 'utf8',
'dbcollat' => 'utf8_general_ci',
'swap_pre' => '',
'encrypt' => FALSE,
'compress' => FALSE,
'stricton' => FALSE,
'failover' => array(),
'save_queries' => TRUE
);
Is there more to work correctly?

Thank you

[TatwiraT]

check if you are loading the database as Libraries or config in the autloader !