On Mon, 21 Oct 2024, 18:09 Morgan, <weedpac...@varteg.nz> wrote: > You can’t use: > $sorted_datasets = array_map(sort(...), $datasets); > You want > $sorted_datasets = $datasets; > array_walk($sorted_datasets, sort(...)); >
A warning: no one should ever use array_walk($sorted_datasets, sort(...)); as general-use script. When sorting a 2d array in this fashion (only non-fatally executed with numeric first level keys https://3v4l.org/HaU42), the first level keys will be used as the sorting flag while sorting each row. This means that different rows may have different sorting flags applied -- effectively corrupting the result. https://3v4l.org/FeIpj -- notice how rows with keys 2, 5, and 10 are sorted as strings. Mick >
