PHP - Listing all directories and sub-directories recursively in drop down menu [duplicate]

Answer 1

You can write your own recursive listing of the directories like:

function expandDirectories($base_dir) {
      $directories = array();
      foreach(scandir($base_dir) as $file) {
            if($file == '.' || $file == '..') continue;
            $dir = $base_dir.DIRECTORY_SEPARATOR.$file;
            if(is_dir($dir)) {
                $directories []= $dir;
                $directories = array_merge($directories, expandDirectories($dir));
            }
      }
      return $directories;
}

$directories = expandDirectories(dirname(__FILE__));
print_r($directories);