https://paiza.io/projects/zd3-vX7z9hvOJ7rRbvJXGQ?language=php
https://paste2.org/5LG7FLOs
https://hackmd.io/s/HJQKc4r2ke
https://paiza.io/projects/xOd0l6f_M4030UFk2MdSJQ?language=php
https://paste2.org/sIIMd2ZW