https://paiza.io/projects/Or5v2UWo3UMZNW49pCqCeQ?language=php
https://paste2.org/KNdpYg7v
https://hackmd.io/s/HJGS5QH2Jg
https://paiza.io/projects/btprPsN8jqFi9pd8GlGNcg?language=php
https://paste2.org/C2m2kzP5