/**
* Gives an instance of dbLayer
* @param string $driver
* @param string $host
* @param string $database
* @param string $user
* @param string $password
* @param boolean $persistent
* @return instance du driver
*/
public static function getInstance($driver, $host, $database, $user = '', $password = '', $persistent = false)
{
if (!isset(self::$instance)) {
self::$instance = self::init($driver, $host, $database, $user, $password, $persistent);
}
return self::$instance;
}
