/**
* helper function for sql string creation. change last_updated to updated
*
* @access private
* @param object $obj
* @param array $vars array of variables
* @return array quoted strings
*/
function &_makeVarsArray4SQL(&$obj, &$vars)
{
$ret = parent::_makeVarsArray4SQL($obj, $vars);
$ret['updated'] = 'FROM_UNIXTIME(' . $ret['updated'] . ')';
return $ret;
}