#!/usr/bin/env php

Making Thumb for 1/6: ./test_dir/1/1003061106a.jpg
Making Thumb for 2/6: ./test_dir/1003061106a.jpg
Making Thumb for 3/6: ./test_dir/2/1003061106a.jpg
Making Thumb for 4/6: ./test_dir/3/1003061106a.jpg
Making Thumb for 5/6: ./test_dir/a.jpg
Making Thumb for 6/6: ./test_dir/b.jpg