This guide explains how PHP's usort() function sorts arrays using a user‑defined comparison callback, covering its signature, how to write comparison functions, examples for numeric and associative arrays, and important considerations for reliable custom sorting.
This article explains the PHP usort() function, detailing its syntax, how to write custom comparison callbacks, and provides step‑by‑step examples for sorting numeric arrays, associative arrays of objects, and handling common pitfalls such as return values and in‑place array modification.
The article explains PHP's uksort() function, which sorts an array by its keys using a custom comparison function, details its signature, parameters, return values, provides a complete example with code and shows the resulting output after reordering the keys.
This guide explains Python's list sorting methods, showing how the in‑place sort() works, how to obtain sorted copies with slicing or the sorted() function, and how to use custom comparison functions and optional key and reverse parameters for flexible ordering.
