PHP : get recursive directory structure

getStructure.php

<?php

function getContents($path) {
    $contents = array_diff(scandir($path, SCANDIR_SORT_ASCENDING), array('..', '.')); // For Linux environments, excluded the .. and . from list
    $filtered = array();
    foreach ($contents as $item) {
        $itemPath = $path . '/' . $item; // scan_dir() requires an entire path, not just the filename (unless you cd in the directory)
        if (is_dir($itemPath)){ // only keeps the directories
            $subarray = array('name' => "$item", 'children' => getContents($itemPath)); // saves the folder name as `name` property and the children recursively
            array_push($filtered, $subarray);
        }
    }
    return $filtered;
}

$rootDir = '/path/to/analysis/root/directory/';

$structure = json_encode(getContents($rootDir), JSON_PRETTY_PRINT);

header('Content-Type: application/json'); # tells your browser it's receiving json data
echo $structure; # send the json to your browser