Dropbox API: List files only (including those in subfolders)

I am trying to list all files in a specific Dropbox folder, including the files in subfolders, but without displaying the folders themselves.

I am using the DropboxClient PHP Class, but am not attached to it.

My current code works only for files in the first subfolders. Plus it takes a very long time to load due to me querying Dropbox about each folder's content independently. I know I could get a one-time recursive API call, but I seem to fail at working with the Array.

<?php
$folders = $dropbox->GetFiles("/Downloads/",false);

if(!empty($folders)) {

    $i=0;

    foreach($folders as $o) {
        if ($o->is_dir = true) {

            list(, $foldername) = explode('-', $o->path, 2);

            $i++;
            $cat[$i] = $foldername;
            echo '<h2>'.$foldername.'</h2>';

            $files = $dropbox->GetFiles($o->path,false);
            ?>




                <table>
                <tbody><tr>
                    <th>File</th>
                    <th>Date</th>
                    <th>Title</th>
                    <th>Description</th>
                </tr>
                <?php foreach($files as $f): ?>

                <?php

                        $filelink = $dropbox->GetLink($f, false);

                        $filetype = pathinfo($f->path, PATHINFO_EXTENSION);
                        $filename = pathinfo($f->path, PATHINFO_FILENAME);
                        $filenamesplit = explode ( '_-_', $filename);
                ?>

                <tr>
                    <td><a href="<?= $filelink ?>" target="_blank">Download</a></td>
                    <td><?= date("d.m.Y", strtotime($f->modified)); ?></td>
                    <td><?= $filenamesplit[0] ?></td>
                    <td><?= $filenamesplit[1] ?></td>
                </tr>
                <?php endforeach; ?>
                </tbody></table>


            <?php

        }
    }


}

The file structure is e.g. something like this:

Cat1Folder - File 1
Cat1Folder - SubFolder - File 2
Cat1Folder - SubFolder - File 3
Cat2Folder - File 1
Cat2Folder - SubFolder - File 2

And I want a pure list of files to be outputted, regardless of the folder they're in.

Cat1Folder:
File 1
File 2
File 3

Cat2Folder:
File 1
File 2

I think you're not longer interested, but while I was looking for something similar I found this from you. From "DropboxClient PHP Class" documentation :

GetFiles($dropbox_path=”, $recursive=false) Get file list of a folder. Returns an array where keys the file paths and values metadata. If $recursive is true, all sub-folders are recursivly scanned. Note that this can take some time because each sub-folder causes a new API request.

So I think you just change your code to: $dropbox->GetFiles("/Downloads/",true);