Printing out an array bit of a different way - php

Question

I've been struggling quite a bit with this. I have a folder with a list of files and a basic naming order - abc-def-xyz.php
I'm trying to create an index page to list all of the files automatically in groups. So:
abc-def-xyz.php
abc-def-xzz.php
abb-def-xyz.php
Would show in the php index page as:
abc
def
xyz
xzz
abb
def
xyz
I can get to the point of exploding the file names and removing the extension, then i'm just lost. Any advice would be much appreciated. Thank you!
Array
(
[0] => Array (this is applyOnline-alert-warning.php)
(
[0] => applyOnline
[1] => alert
[2] => warning
)
[1] => Array
(
[0] => applyOnline
[1] => collectionOrDelivery
)
)

Answer 1

Using the methodology from this answer How to write getter/setter to access multi-level array by key names?:
$array = array();
foreach($files as $file) {
$temp = &$array;
foreach(explode('-', $file) as $key) {
$temp =& $temp[pathinfo($key, PATHINFO_FILENAME)];
}
$temp = $file;
}
Yields an array where the key names can be used:
Array
(
[abc] => Array
(
[def] => Array
(
[xyz] => abc-def-xyz.php
[xzz] => abc-def-xzz.php
)
)
[abb] => Array
(
[def] => Array
(
[xyz] => abb-def-xyz.php
)
)
)