https://paiza.io/projects/x-Xg8wzc1107JeLMw7dvoQ?language=php
https://paste2.org/J0Xk6LD9
https://hackmd.io/s/HykHtHE2Jl
https://paiza.io/projects/XGBgZF8UXYCbnb8RUcnqJw?language=php
https://paste2.org/79nVY23B