JBZoo\Utils\FS::ls PHP Method

    public static function ls($dir)
    {
        $contents = array();
        $flags = \FilesystemIterator::KEY_AS_PATHNAME | \FilesystemIterator::CURRENT_AS_FILEINFO | \FilesystemIterator::SKIP_DOTS;
        $dirIter = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($dir, $flags));
        foreach ($dirIter as $path => $fi) {
            $contents[] = $path;
        }
        natsort($contents);
        return $contents;
    }

 /**
  * Register commands
  *
  * @param $commandsDir
  * @return bool
  */
 protected function _registerCommands($commandsDir)
 {
     $files = FS::ls($commandsDir);
     if (empty($files)) {
         return false;
     }
     foreach ($files as $file) {
         require_once $file;
         $reflection = new \ReflectionClass(__NAMESPACE__ . '\\Command\\' . FS::filename($file));
         if ($reflection->isSubclassOf('Symfony\\Component\\Console\\Command\\Command') && !$reflection->isAbstract()) {
             $this->add($reflection->newInstance());
         }
     }
     return true;
 }