Recursive function scanning a folder and storing it in an array - php

Question

I am trying to make a recursive function to go through all of the folder path that I have given it in the parameters.
What I am trying to do is to store the folder tree into an array for example I have Folder1 and this folder contains 4 text files and another folder and I want the structure to be a multidimensional array like the following
Array 1 = Folder one
Array 1 = text.text.....So on so forth
I have the following function that I build but its not working as I want it too. I know that I need to check whether it is in the root directory or not but when it becomes recursive it becoems harder
function displayAllFolders($root)
{
$foldersArray = array();
$listFolderFile = scandir($root);
foreach($listFolderFile as $row)
{
if($row == "." || $row == "..")
{
continue;
}
elseif(is_dir("$root/$row") == true)
{
$foldersArray["$root/$row"] = "$row";
$folder = "$root/$row";
#$foldersArray[] = displayAllFolders("$root/$row");
}
else
{
$foldersArray[]= array("$root/$row") ;
}
}
var_dump($foldersArray);
}

Answer 1

Using RecursiveDirectoryIterator with RecursiveIteratorIterator this becomes rather easy, e.g.:
$it = new RecursiveIteratorIterator(
new RecursiveDirectoryIterator(
// root dir
'.',
// ignore dots
RecursiveDirectoryIterator::SKIP_DOTS
),
// include directories
RecursiveIteratorIterator::SELF_FIRST
// default is:
// RecursiveIteratorIterator::LEAVES_ONLY
//
// which would only list files
);
foreach ($it as $entry) {
/* #var $entry \SplFileInfo */
echo $entry->getPathname(), "\n";
}

Answer 2

Your approach isn't recursive at all.
It would be recursive if you called the same function again in case of a directory. You only make one sweep.
Have a look here:
http://php.net/manual/en/function.scandir.php
A few solutions are posted. I would advise you to start with the usercomment by mmda dot nl.
(function is named dirToArray, exactly what you are tryting to do.)
In case it will be removed, I pasted it here:
function dirToArray($dir) {
$result = array();
$cdir = scandir($dir);
foreach ($cdir as $key => $value) {
if (!in_array($value,array(".",".."))) {
if (is_dir($dir . DIRECTORY_SEPARATOR . $value)) {
$result[$value] = dirToArray($dir . DIRECTORY_SEPARATOR . $value);
}
else {
$result[] = $value;
}
}
}
return $result;
}

Answer 3

Why not using PHP itself? Just have a look at the RecursiveDirectoryIterator of the standard php library (SPL).
$folders = [];
$iterator = new RecursiveDirectoryIterator(new RecursiveDirectoryIterator($directory));
iterator_apply($iterator, 'scanFolders', array($iterator, $folders));
function scanFolders($iterator, $folders) {
while ($iterator->valid()) {
if ($iterator->hasChildren()) {
scanFolders($iterator->getChildren(), $folders);
} else {
$folders[] = $iterator->current();
}
$iterator->next();
}
}