zend frameWork 数据库配置

[mysql]
db.adapter=PDO_MYSQL
db.params.host=localhost
db.params.username=root
db.params.password=root
db.params.dbname=votedb

        $url = constant("APPLICATION_PATH"). DIRECTORY_SEPARATOR . 'configs' . 
        									 DIRECTORY_SEPARATOR .'application.ini' ;
		$dbconfig = new Zend_Config_Ini( $url , "mysql");
        $db = Zend_Db::Factory( $dbconfig->db );
        
        $db->query ( ' SET NAMES UTF8' );
        Zend_Db_table::setDefaultAdapter( $db );