Create Multidimensional Tree Object From Array In PHP - php

Question

I need to take an array that turns the key (split by /) of each element into a child array, and assigns the data in the right format in the new array.
There can be multiple levels of nesting, realistically never more then 10, but that is to be decided.
For example;
given the input of
$i_have_this = [
"Base/child" => [
[
"filename" => "child-1",
"last_modified" => "29/01/2020"
],
[
"filename" => "child-2",
"last_modified" => "29/01/2020"
],
[
"filename" => "child-3",
"last_modified" => "29/01/2020"
]
],
"Base/child/grandChild1" => [
[
"filename" => "grandChild1-1",
"last_modified" => "29/01/2020"
]
],
"Base/child/grandChild2" => [
[
"filename" => "grandChild2-1",
"last_modified" => "29/01/2020"
],
[
"filename" => "grandChild2-2",
"last_modified" => "29/01/2020"
],
[
"filename" => "grandChild2-3",
"last_modified" => "29/01/2020"
],
[
"filename" => "grandChild2-4",
"last_modified" => "29/01/2020"
],
[
"filename" => "grandChild2-5",
"last_modified" => "29/01/2020"
]
]
];
I would like the output of
$want_this = [
'name' => 'Base',
'children' => [
[
'name' => 'child',
'children' => [
["name" => "child-1"],
["name" => "child-2"],
["name" => "child-3"],
[
"name" => "grandChild1",
"children" => [
["name" => "grandChild1-1"]
]
],
[
"name" => "grandChild2",
"children" => [
["name" => "grandChild2-1"],
["name" => "grandChild2-2"],
["name" => "grandChild2-3"],
["name" => "grandChild2-4"]
]
],
]
]
]
];
So far I have;
foreach($i_have_this as $path => $value) {
$temp = &$want_this;
foreach (explode('/', $path) as $key) {
$temp = &$temp[$key];
}
$temp = $value;
}
but can't quite finish it off.
Example code run here

Answer 1

I think you could treat this the same way that most use "dot" notation for arrays (like in Laravel). Just replace "." with "/" in your case:
Example Code
function unflatten($data) {
$output = [];
foreach ($data as $key => $value) {
$parts = explode('/', $key);
$nested = &$output;
while (count($parts) > 1) {
$nested = &$nested[array_shift($parts)];
if (!is_array($nested)) $nested = [];
}
$nested[array_shift($parts)] = $value;
}
return $output;
}
print_r(unflatten($i_have_this));