php dynamically open multilevel directory using open_dir() function - php

Question

I took over this site for management. the former developer used opendir() which opens only one level before getting the files in the folder. I would like to create multi-level folders before the final files. I created the sub-folders on the server but I need to modify the code to dynamically recognise the sub-folders as folders not file.
if ($handle = opendir("parentfolder/".$pageid.'/')) {
$list = array();
while (false !== ($file = readdir($handle))) {
if ($file != "." && $file != "..") {
$list[] = "$file\n";
}
}
rsort($list);
$clength = count($list);
for($x = 0; $x <$clength; $x++){
$pubFolders .= "<a href='".$maindomain."/reports/".$list[$x]."' class='imagefolders'><img src='".$maindomain."/images/icons/image.png' alt=''/><br>".$list[$x]."</a>";
}
$data = $data.$pubFolders;
closedir($handle);
}

Answer 1

Use glob() with GLOB_ONLYDIR; some example functions are as follows:
function findDirectories($rootPath) {
$directories = array();
foreach (glob($rootPath . "/*", GLOB_ONLYDIR) as $directory) {
$directories[] = $directory;
}
return $directories;
}
function findFiles($rootPath, $extension) {
$files = array();
foreach (glob($rootPath . "/*.$extension") as $file) {
$files[] = $file;
}
return $files;
}
function findFilesRecursive($rootPath,$extension) {
$files = findFiles($rootPath,$extension);
$directories = findDirectories($rootPath);
if (!empty($directories)) {
foreach ($directories as $key=>$directory) {
$foundFiles = findFilesRecursive($directory,$extension);
foreach ($foundFiles as $foundFile) {
$files[] = $foundFile;
}
}
}
return $files;
}
If you don't care about defining specific extensions, just pass in * as the $extension parameter.