Algorithms: MPTTA for PHP and MySQL
Andrea Giammarchi (contact me)
This class can manage hierarchic trees of information stored in a MySQL database.
It can add, move or delete branches inside a database tree created using the Modified Preorder Tree Traversal Algorithm described by Joe Celko in the DBMS Magazine in 1996.
This class can run using PHP 4 and MySQL 3.X or later.
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