How to convert a directory structure to an array of URLs

Question

I want to convert my directory structure to an array format with file URLs. Here is my directory structure.

public
  |-product_001
      |-documents
      |   |- doc_001.txt
      |   |- doc_002.txt
      |   |- doc_003.txt
      |
      |-gallery
          |- img_001.png
          |- img_002.png
          |- img_003.png

And this is what I want:

array(
  'product_001' =>array(
      'documents' =>array(
         0 => "public/product_001/documents/doc_001.txt",
         1 => "public/product_001/documents/doc_002.txt",
         2 => "public/product_001/documents/doc_003.txt"
      )
      'gallery' =>array(
         0 => "public/product_001/gallery/img_001.png",
         1 => "public/product_001/gallery/img_002.png",
         2 => "public/product_001/gallery/img_003.png"
      )
  )
)

Here is the function:

function dirToArray($dir,$url) {

    $result = array();

    $cdir = scandir($dir);
    foreach ($cdir as $key => $value) {

        if (!in_array($value, array(".", ".."))) {
            if (is_dir($dir . DIRECTORY_SEPARATOR . $value)) {
                $url.=DIRECTORY_SEPARATOR.$value;
                $result[$value] = dirToArray($dir . DIRECTORY_SEPARATOR . $value,$url);
            } else {
                $result[] = $url.DIRECTORY_SEPARATOR.$value;
            }
        }
    }

    return $result;
}

Here is the conclusion I have received so far:

Array
(
    [product_001] => Array
        (
            [documents] => Array
                (
                    [0] => public/product_001/documents/doc_001.txt
                    [1] => public/product_001/documents/doc_002.txt
                    [2] => public/product_001/documents/doc_003.txt
                )

            [gallery] => Array
                (
               [0] => public/product_001/documents/gallery/img_001.png
               [1] => public/product_001/documents/gallery/img_002.png
               [2] => public/product_001/documents/gallery/img_003.png
                )

        )

)

Can someone help me achieve this? Thank you very much in advance.

Answer 1

It should be even easier. Usually, if you have recursion, you don't need state. So just read your url and clear the code, no need to do concatenation multiple times.

According to the Ryan Vincents'comments added dynamic delimiters.

Mavericks' .

<?php

function dirToArray($dir, $separator = DIRECTORY_SEPARATOR, $root = '') {

    $result = array();
    if ($root === '') {
        $root = $dir;
    }

    $cdir = scandir($dir);
    foreach ($cdir as $key => $value) {

        if (!in_array($value, array(".", ".."))) {
            $current = $dir . $separator . $value;

            if (is_dir($current)) {
                $result[$value] = dirToArray($current, $separator, $root);
            } else {
                $result[] = str_replace($root, '',$current);
            }
        }
    }

    return $result;
}