https://paiza.io/projects/BQVcwRQzP651WwhOIsQIdw?language=php
https://paste2.org/CC1OY6EE
https://hackmd.io/s/HJc_UE4nJl
https://paiza.io/projects/K73qbkulcgTBbdsX1hDCGQ?language=php
https://paste2.org/XCVhV8vt