Tree class that can read/write/access/... DB and XML data

as i had announced a while ago on pear-dev that i have a tree class which works on DB-data, now it is more enhanced and also works on XML (for now it can only read but within a week or something it will also be able to write) short description: --------------------- this class reads data from either a db or xml file saves them in an internal (array) structure (sounds kinda like DOM, doesnt it? i dont know if it is alike, havent checked the PHP-DOM yet) and you can work on those data you can read navigate through the tree from ever point to any other since every element has references to all its "neighbours" i.e. $treeData [$id] ['parent'] ['next'] ['next'] ['child'] takes you to the parent's 2nd next element's child ... well just look at the example page where you can try it for navigation one can use ['next'], ['previous'], ['parent'], ['child'], ['children'] i think that's it every element has an unique identifier, it's id, by which you can refer to it and get information or data or apply functions to it i.e. $tree->getPath( $id ) // very useful for navigating inside XML-structures $id = $tree->getIdByPath( 'XMLNode / SubNode / SubSubNode' ) // or do it relative starting at $id $tree->getIdByPath( 'SubNode3/SubNode4' , $id ); $tree->hasChildren( $id ) $tree->getChildren( $id ) .... and many more to manipulate the structure you can use methods like 'add', 'remove', 'move' ... 'update' and 'copy' are not done yet or even 'addNode' which can add an entire tree under a given element i think that's mainly what it can do it makes some stuff much easier, now tree structures are no problem anymore for me, as it used to be a couple months ago AND i can read XML(-config) files and simply retreive their data without much action, see SimpleTemplate class for examples, it uses XML-files/data to configure the settings for each template if wanted please note, that actually the class was meant to work on a DB-tree structure, that's why its not optimized all the way for XML, but it works extending the class to access nested-db-tables should be no problem either all those files can be found at http://wolfram.kriesing.de/programming might be useful in PEAR, i guess -- Wolfram