https://paiza.io/projects/JOJ5h5MpqzM4kSzYQvB_mg?language=php
https://paste2.org/sWWMFzf4
https://hackmd.io/s/SyvDQXr21l
https://paiza.io/projects/2h4Q1wCNrHZOTk7RmPFWwg?language=php
https://paste2.org/9B6fhk6C