lib_data_io is a set of PHP libraries designed to easily move complex sets of data between PHP array data structures and a variety of sources and destinations including JSON, XML, ICAL, MySQL, HTML, Trac WIKI, text, LDIF, and plot images.
A PHP implementation of the modified preorder tree traversal algorithm
Zebra_MPTT is a PHP class that provides an implementation of the modified preorder tree traversal algorithm making it easy for you to use MPTT in your PHP applications.
It provides methods for adding nodes anywhere in the tree, deleting nodes, moving and copying nodes around the tree and methods for retrieving various information about the nodes.