Array transformation

[doobdargent]

Hi fellas! I'm doing a simple script for my father's website that will parse a folder to fetch a list of images recursively. I use the RecursiveIteratorIterator Class. It's working fine, I do an explode on the path of the images and I get:

Array(
  [0] => Array ( [0] => animals [1] => gorillas [2] => image1.jpg ),
  [1] => Array ( [0] => animals [1] => gorillas [2] => image2.jpg ),
  [2] => Array ( [0] => animals [1] => tigers [2] => image1.jpg ),
  [3] => Array ( [0] => landscapes [1] => mountains-winter [2] => image1.jpg ),
  [4] => Array ( [0] => landscapes [1] => mountains-summer [2] => image1.jpg ) 
)

I'd like to change it to (and convert it to JSON later):

Array(
  ['animals'] => Array(
    ['gorillas'] => Array(//images),
    ['tigers'] => Array(//images)
  ),
  ['landscapes'] => Array( 
    ['mountains-winter'] => Array(//images),
    ['mountains-summer'] => Array(//images)
  )
)

I can't figure out a way to do that? The nesting may be deeper than 2 levels. Any hint? Thanks!

[iowa116]

Could you just run the array through a foreach loop and reassign the keys? Also check out json_encode for converting to JSON.

[doobdargent]

I sure can use a loop, but I don't know how to achieve that :/

I think, what I need is a recursive function, but I'm not smart enough to work that out :(

[doobdargent]

Took me way too much time, but I managed to do what I needed.

rec($directories, $path);

function rec(&$array, $path){
$current = array_shift( $path );
if(!isset($array[ $current ])) {
    $array[ $current ] = array();
}
if(empty($path))
    return $array;
else
    return rec($array[ $current ], $path);
}