Can PHP convert a 2D array w/ 3 cols to a hierarchical structure w/o assoc. keys?
I have data like this: Which can also be seen as this PHP array: $items = [ ['item1' => 'a', 'item2' => 'c', 'item3' => 'h'], ['item1' => 'a', 'item2' => 'c', 'item3' => 'i'], ['item1' => 'a', 'item2' =>…