// Varien_Object
<?php
    /**
     * Map of fields to sync to other fields upon changing their data
     */
    protected $_syncFieldsMap = array();

    /**
     * Constructor
     *
     * By default is looking for first argument as array and assignes it as object attributes
     * This behaviour may change in child classes
     *
     */
    public function __construct()
    {
        $this->_initOldFieldsMap();
        if ($this->_oldFieldsMap) {
            $this->_prepareSyncFieldsMap();
        }

        $args = func_get_args();
        if (empty($args[0])) {
            $args[0] = array();
        }
        $this->_data = $args[0];
        $this->_addFullNames();

        $this->_construct();
    }

    protected function _addFullNames()
    {
        $existedShortKeys = array_intersect($this->_syncFieldsMap, array_keys($this->_data));
        if (!empty($existedShortKeys)) {
            foreach ($existedShortKeys as $key) {
                $fullFieldName = array_search($key, $this->_syncFieldsMap);
                $this->_data[$fullFieldName] = $this->_data[$key];
            }
        }
    }
?>

// Debug:
Array
        (
            [0] => Array
                (
                    [file] => /var/www/de_acdmshops_www/lib/Varien/Object.php
                    [line] => 110
                    [function] => _addFullNames
                    [class] => Varien_Object
                    [object] => Mage_Core_Model_Config_Options Object
                        (
                            [_dirExists:protected] => Array
                                (
                                )

                            [_data:protected] => Array
                                (
                                )

                            [_hasDataChanges:protected] =>
                            [_origData:protected] =>
                            [_idFieldName:protected] =>
                            [_isDeleted:protected] =>
                            [_oldFieldsMap:protected] => Array
                                (
                                )

                            [_syncFieldsMap:protected] => Array
                                (
                                )

                        )

                    [type] => ->
                    [args] => Array
                        (
                        )

                )

            [1] => Array
                (
                    [file] => /var/www/de_acdmshops_www/app/code/core/Mage/Core/Model/Config.php
                    [line] => 200
                    [function] => __construct
                    [class] => Varien_Object
                    [object] => Mage_Core_Model_Config_Options Object
                        (
                            [_dirExists:protected] => Array
                                (
                                )

                            [_data:protected] => Array
                                (
                                )

                            [_hasDataChanges:protected] =>
                            [_origData:protected] =>
                            [_idFieldName:protected] =>
                            [_isDeleted:protected] =>
                            [_oldFieldsMap:protected] => Array
                                (
                                )

                            [_syncFieldsMap:protected] => Array
                                (
                                )

                        )

                    [type] => ->
                    [args] => Array
                        (
                            [0] => Array
                                (
                                )

                        )

                )

            [2] => Array
                (
                    [file] => /var/www/de_acdmshops_www/app/Mage.php
                    [line] => 635
                    [function] => __construct
                    [class] => Mage_Core_Model_Config
                    [object] => Mage_Core_Model_Config Object
                        (
                            [_useCache:protected] =>
                            [_cacheSections:protected] => Array
                                (
                                    [admin] => 0
                                    [adminhtml] => 0
                                    [crontab] => 0
                                    [install] => 0
                                    [stores] => 1
                                    [websites] => 0
                                )

                            [_cacheLoadedSections:protected] => Array
                                (
                                )

                            [_options:protected] =>
                            [_classNameCache:protected] => Array
                                (
                                )

                            [_blockClassNameCache:protected] => Array
                                (
                                )

                            [_secureUrlCache:protected] => Array
                                (
                                )

                            [_distroServerVars:protected] =>
                            [_substServerVars:protected] =>
                            [_resourceModel:protected] =>
                            [_eventAreas:protected] =>
                            [_dirExists:protected] => Array
                                (
                                )

                            [_allowCacheForInit:protected] => 1
                            [_cachePartsForSave:protected] => Array
                                (
                                )

                            [_prototype:protected] =>
                            [_isLocalConfigLoaded:protected] =>
                            [_baseDirCache:protected] => Array
                                (
                                )

                            [_customEtcDir:protected] =>
                            [_canUseLocalModules:protected] =>
                            [_moduleNamespaces:Mage_Core_Model_Config:private] =>
                            [_allowedModules:protected] => Array
                                (
                                )

                            [_xml:protected] =>
                            [_cacheId:protected] => config_global
                            [_cacheTags:protected] => Array
                                (
                                )

                            [_cacheLifetime:protected] =>
                            [_cacheChecksum:protected] =>
                            [_cacheSaved:protected] =>
                            [_cache:protected] =>
                            [_elementClass:protected] => Varien_Simplexml_Element
                            [_xpathExtends:protected] => //*[@extends]
                        )

                    [type] => ->
                    [args] => Array
                        (
                            [0] => Array
                                (
                                )

                        )

                )

            [3] => Array
                (
                    [file] => /var/www/de_acdmshops_www/index.php
                    [line] => 80
                    [function] => run
                    [class] => Mage
                    [type] => ::
                    [args] => Array
                        (
                            [0] => s24d_de
                            [1] => website
                        )

                )