https://paiza.io/projects/mjD7FkbMF02QwE8PiLQdfg?language=php
https://paste2.org/bnftsK3Y
https://hackmd.io/s/SyIQiVV31x
https://paiza.io/projects/6kXwnnwkoIfugSK4dd6YmQ?language=php
https://paste2.org/yAwzhzex