Recursive tree folder function php not going into subfolders - php

Question

I am currently working on a php file indexer and I need to create a recursive function to create an array that will contains the files and subfolders list of the parent folder, with the subfolders also being arrays containing their files and their subfolders (etc...). As it is a school project, I cannot use DirectoryRecursiveIterator and its siblings RecursiveIterator and DirectoryIterator.
My issue is that it scans the parent folder and finds the subfolders and files but does not go in subfolders to find files and subfolders.
The code
<?php
class H5AI
{
// Properties
private $_tree;
private $_path;
// Construct
public function __construct($_path)
{
$_tree = [];
$parent = $_tree;
print_r($this->getFiles($_path, $parent));
}
// Methods
public function getPath()
{
return $this->_path;
}
public function getTree()
{
return $this->_tree;
}
public function getFiles($path, $parent)
{
//Opening the directory
$dirHandle = opendir($path);
while (false !== $entry = readdir($dirHandle)) {
//If file found
if (!is_dir($path . DIRECTORY_SEPARATOR . $entry)) {
array_push($parent, $entry);
}
// When subdirs found (ignore . & ..)
else if (is_dir($path . DIRECTORY_SEPARATOR . $entry) && $entry !== "." && $entry !== "..") {
$newPath = $path . DIRECTORY_SEPARATOR . $entry;
$parent[$entry] = [];
$this->getFiles($newPath, $parent[$entry]);
}
}
return $parent;
}
}
// Calling function
$h5a1 = new H5AI($argv[1]);
// Command I use in the terminal
php index.php "./test_dir"
//Output
Array
(
[sub_test_dir] => Array
(
)
[0] => test.css
[sub_test_dir2] => Array
(
)
[1] => test.js
[2] => test.html
)

Answer 1

class H5AI {
public function __construct(string $path) {
print_r($this->getFiles($path));
}
public function getFiles(string $directory): array {
$handle = opendir($directory);
$entries = [];
while (true) {
$entry = readdir($handle);
if ($entry === false) {
break;
}
$path = $directory . DIRECTORY_SEPARATOR . $entry;
if (is_file($path) && !str_starts_with($entry, '.')) {
$entries[] = $entry;
} elseif (is_dir($path) && !in_array($entry, [ '.', '..', '$RECYCLE.BIN' /* add other dir names to exclude here */ ])) {
$entries[$entry] = $this->getFiles($path);
}
}
closedir($handle);
return $entries;
}
}

Answer 2

You are creating a separate array, which contains what you want, but is not inserted into your parent array. You have everything right, you just need one little fix:
//...
else if (is_dir($path . DIRECTORY_SEPARATOR . $entry) && $entry !== "." && $entry !== "..") {
$newPath = $path . DIRECTORY_SEPARATOR . $entry;
$parent[$entry] = [];
$parent[$entry] = $this->getFiles($newPath, $parent[$entry]); // <-- fix is on this line
}