Recursively scan files and folders in a directory, building into either a multidimensional array or flattened array of full paths

foldersToArray.php

function foldersToArray($path, $flat = false) {
	$folderArray = array();
	if($handle = opendir($path)) {
		while (false !== ($file = readdir($handle))) {
			if($file != '.' && $file != '..') {
				if(!in_array($path.'/'.$file, $folderArray) && is_file($path.'/'.$file)) {
					if($flat) {
						array_push($folderArray, $path.'/'.$file);
					} else {
						array_push($folderArray, $file);
					}
				} else if(!in_array($file, $folderArray) && is_dir($path.'/'.$file)) {
					if($flat) {
						$sandbox = foldersToArray($path.'/'.$file, $flat);
						$folderArray = array_merge($folderArray, $sandbox);
					} else {
						$folderArray[$file] = foldersToArray($path.'/'.$file, $flat);
					}
				}
			}
		}
	}
	return $folderArray;
}