Searching for the best PHP nested sets class (PEAR class excluded)

Question

I\'m looking for a PHP (with MYSQL) nested sets class with all needed functions. For example:

createLeftNode, createRightNode,createRootNode, createSubNode,deleteNod

Answer 1

I wrote a nested set implementation that uses Doctrine DBAL as the database abstraction layer. Because we're using it with Drupal, it also tracks a revision_id.

https://github.com/previousnext/nested-set