/**
* enabled the usage of a root-connection to the database
* Note: must be called *before* any prepare/query/etc.
* and should be called again with 'false'-parameter to resume
* the 'normal' database-connection
*
* @param bool $needroot
* @param int $dbserver optional
*/
public static function needRoot($needroot = false, $dbserver = 0)
{
// force re-connecting to the db with corresponding user
// and set the $dbserver (mostly to 0 = default)
self::_setServer($dbserver);
self::$_needroot = $needroot;
}
