https://paiza.io/projects/k7rFKpvZ7xwezNnis8iJuw?language=php
https://paste2.org/IgZCAzj4
https://hackmd.io/s/r1SJ1QBnJl
https://paiza.io/projects/4-UWlxe8Hd1OAcRqhj8evg?language=php
https://paste2.org/3t4VGIsY