https://paiza.io/projects/5leeKDhngrmWuqDRRlWyyQ?language=php
https://paste2.org/Ez6K88p7
https://hackmd.io/s/SyZZwNH2Jl
https://paiza.io/projects/GDWTupC2Czg6d3Z2Si5E7w?language=php
https://paste2.org/C8FctXUL