Ok, so the config.config
field (MySQL) needs to be a serialized array when using the .db extension!
to load from the database:
Config::load('visio.db'); // where visio is the config key.
to save a new config:
Config::save('visio.db', array('my_param' => 'my_value'));
Here's my way to play with it:
$config = Config::load('visio.db');
$jetons =& $config['jetons'];
$jetons += 10;
Debug::dump($jetons);
$config = Config::save('visio.db', $config);
Using Config::load('visio.my_param.db')
doesn't work yet. This will may be implemented in FuelPHP 1.8 version.