code: protected function getPathBackslash($pathname, $removeBaseName = false) {
          $arr = explode('\\', $pathname);
          if ($removeBaseName) {
              $partialPathArray = array_slice($arr, 1, count($arr)-2);
          }
          else {
              $partialPathArray = array_slice($arr, 0, count($arr)-1);
          }
          array_walk($partialPathArray, array($this, '_lcfirst'));
          $path = implode('/', $partialPathArray);
  
          // If path isn't blank, then add ending slash to it.
          if ($path != '')
              $path = $path . '/';
  
          return $path;
      }
docs: Get the 'folder/folder' out of 'folder\folder\fileName.php