https://paiza.io/projects/hE6Po1lu48NZ0oxrd2i9Jg?language=php
https://paste2.org/70f75A6t
https://hackmd.io/s/S10pLXrnkg
https://paiza.io/projects/yeXq2P8gDJ5R6_y0NxcLtg?language=php
https://paste2.org/cy5BA5kU