Simple ini style configuration file

[general]
db.adapter = "PDO_MYSQL"
db.config.host = "localhost"
db.config.username = "root"
db.config.password = ""
db.config.dbname = "test"

$config = new Zend_Config_Ini('./config/config.ini', 'general');

$db = Zend_Db::factory($config->db->adapter, $config->db->config->toArray());
Zend_Db_Table::setDefaultAdapter($db);

$db->setFetchMode(Zend_Db::FETCH_OBJ);