How to rename a folder in Laravel 5?

When I create a product and upload images for it, I'm creating folder with product name. When I rename product, I need to rename folder with its images. I'm trying to do it with php function rename() but getting error:

rename(C:\OpenServer\domains\site.loc\public/green/images/case-phanteks-enthoo-luxe-tempered-glass-black/,C:\OpenServer\domains\kompik.loc\public/green/images/case222-phanteks-enthoo-luxe-tempered-glass-black/): �������� � �������. (code: 5)

Code:

$oldDir = public_path() . '/green' . '/images/' . str_slug($product->name) . '/';
$dir = public_path() . '/green' . '/images/' . str_slug($data['name']) . '/';


      if($request->hasFile('photos')){  uploaded files

        if (!File::isDirectory($dir)) {
            File::makeDirectory($dir);
        }

            if($data['name']==$product->name) {
            File::cleanDirectory($dir);
        }


       }
       else //no files uploaded but name changed
       {
            if($data['name']!=$product->name){
                   rename($oldDir,$dir);
            }
        }

via Batmannn