Libhashish is a powerful and generic hash library for C and C++. The library attempt to combine the best algorithms in this area and take all kinds of optimizations into account. Furthermore the main focus is applicability - at least you should use this library.
PHP AVL binary search tree.
A set of PHP classes implementing binary search trees that comply to AVL rules. The API exposes methods for tree operations (insert, replace, delete, find), and for inorder traversal (find, first, last, prev, next, curr). Tree and traversal operations implement relaxed
... [More] balance factors, and parent pointer node structures. Hooks for node comparison, error handling and diagnostic logging are provided via a callback interface. [Less]