Array

## Working With Trees When working with tree data structures you often need to craft them in different ways. PHP offers a lot of functions to change the shape of arrays, but often they only go 1 level deep. Trees can count an almost infinite number of levels. Hence we need recursive replacements for our beloved array functions.

## Working with trees When working with tree data structures you often need to craft them in different ways. PHP offers a lot of functions to change the shape of arrays, but often they only go 1 level deep. Trees can count an almost infinite number of levels. Hence we need recursive replacements for our beloved array & string functions.

I recently faced a programming challenge that almost broke my brain. I needed to create a function that could explode any single-dimensional array into a full blown tree structure, based on the delimiters found in its keys. Tricky part was size of the tree could be infinite. I called the function: explodeTree. And maybe it's best to first look at an example.