code di model zend

Nama file CobaModel.php
<?php
class SaveModel extends Zend_Db_Table {
var $dbcon;
function __construct(){
$this->dbcon = Zend_Registry::get('db1');
}
function get(){
$qry=$this->dbcon->query("select max(biodata_id) as maxId from `biodata` where biodata_id like 'B-%'");
$nil=$qry->fetchObject();
return $nil;
}
}