改变magento的核心配置数据--core config data

$inchooSwitch = new Mage_Core_Model_Config();

/*

*turns notice on

*/

$inchooSwitch ->saveConfig('design/head/demonotice', "1", 'default', 0);

/*

*turns notice off

*/

$inchooSwitch ->saveConfig('design/head/demonotice', "0", 'default', 0);