This solution did the job for me. The RecursiveIteratorIterator lists all directories and files recursively but unsorted. The program filters the list and sorts it.
I'm sure there is a way to write this shorter; feel free to improve it. It is just a code snippet. You may want to pimp it to your purposes.
<?php
$path = '/pth/to/your/directories/and/files';
// an unsorted array of dirs & files
$files_dirs = iterator_to_array( new RecursiveIteratorIterator(new RecursiveDirectoryIterator($path),RecursiveIteratorIterator::SELF_FIRST) );
echo '<html><body><pre>';
// create a new associative multi-dimensional array with dirs as keys and their files
$dirs_files = array();
foreach($files_dirs as $dir){
if(is_dir($dir) AND preg_match('/\/\.$/',$dir)){
$d = preg_replace('/\/\.$/','',$dir);
$dirs_files[$d] = array();
foreach($files_dirs as $file){
if(is_file($file) AND $d == dirname($file)){
$f = basename($file);
$dirs_files[$d][] = $f;
}
}
}
}
//print_r($dirs_files);
// sort dirs
ksort($dirs_files);
foreach($dirs_files as $dir => $files){
$c = substr_count($dir,'/');
echo str_pad(' ',$c,' ', STR_PAD_LEFT)."$dir\n";
// sort files
asort($files);
foreach($files as $file){
echo str_pad(' ',$c,' ', STR_PAD_LEFT)."|_$file\n";
}
}
echo '</pre></body></html>';
?>