PHP array of paths as HTML hierarchy - php

Question

I have the following list of paths
GRUPA131/LFA & others/lfa sub.zip
GRUPA131/LFA & others/lfandrei.pdf
GRUPA131/Limbaje formale (Liviu Dinu).pdf
GRUPA131/desktop.ini
GRUPA131/lfa/lab1/1-Theodors MacBook Air.cc
GRUPA131/lfa/lab1/1.cc
GRUPA131/lfa/lab1/1.cc-Theodors MacBook Air.out
GRUPA131/lfa/lab1/1.cc.out
GRUPA131/lfa/lab1/2.cc
GRUPA131/lfa/lab1/input3.in
GRUPA131/lfa/lab1/tema1.zip
alexandru-lamba.png
alexandru-lamba_v2.png
analiza carte 1.pdf
analiza carte 2.pdf
biblsit.docx
center.js
as strings and I want to convert them into a folder hierarchy representable with HMTL. So, for each folder, I want to list it's files, and subfolders, and so on until the list is finished.
It would be best to have the php array hierarchy as follows:
$dirs['dirname'] -> file 1
$dirs['dirname'] -> file 2
$dirs['dirname'] -> file 3
$dirs['dirname'] -> Folder
$dirs['dirname']['folder'] -> file 1
$dirs['dirname']['folder'] -> file 2..
I have tried to split each string by '/' ( PATH_DELIMITER ) but I cannot figure out how to actually get an array like I have mentioned earlier.
Also, my array that has the entire paths, is a simple array. Not associative or so.
Can someone help me figure out how to do this?
Thanks!

Answer 1

Easiest way will be recursive function. My proposal:
function build_folder_structure(&$dirs, $path_array) {
if (count($path_array) > 1) {
if (!isset($dirs[$path_array[0]])) {
$dirs[$path_array[0]] = array();
}
build_folder_structure($dirs[$path_array[0]], array_splice($path_array, 1));
} else {
$dirs[] = $path_array[0];
}
}
$strings = array(
'GRUPA131/LFA & others/lfa sub.zip',
'GRUPA131/LFA & others/lfandrei.pdf',
'GRUPA131/Limbaje formale (Liviu Dinu).pdf',
'GRUPA131/desktop.ini',
'GRUPA131/lfa/lab1/1-Theodors MacBook Air.cc',
'GRUPA131/lfa/lab1/1.cc',
'GRUPA131/lfa/lab1/1.cc-Theodors MacBook Air.out',
'GRUPA131/lfa/lab1/1.cc.out',
'GRUPA131/lfa/lab1/2.cc',
'GRUPA131/lfa/lab1/input3.in',
'GRUPA131/lfa/lab1/tema1.zip',
'alexandru-lamba.png',
'alexandru-lamba_v2.png',
'analiza carte 1.pdf',
'analiza carte 2.pdf',
'biblsit.docx',
'center.js'
);
$dirs = array();
foreach ($strings As $string) {
$path_array = explode('/',$string);
build_folder_structure($dirs,$path_array);
}
print_r($dirs);
Check:
What is a RECURSIVE Function in PHP?
http://php.net/manual/en/language.references.pass.php