how to allow uploads for multiple file type in laravel code example

Example: laravel 7 multiple file upload

if ($request->hasfile('filenames')) {
            foreach ($request->file('filenames') as $file) {
                $name = $file->getClientOriginalName();
                $file->move(public_path() . '/mytestfile/', $name);
                $data[] = $name;
            }
            return back()->with('Success!','Data Added!');
        }