(Yaf >=1.0.0)
Yaf_Config_Abstract is the base class of the
configuration adapters. It provides a uniform way to access a set of
configuration values through nested property syntax
($config->section->key), array access and
iteration. Concrete implementations are
Yaf_Config_Ini (read-only, INI files with
section inheritance) and Yaf_Config_Simple
(PHP arrays, mutable).