https://paiza.io/projects/48rMkFVBvp8POpoINZ2O7Q?language=php
https://paste2.org/aVXL63A8
https://hackmd.io/s/B1VBCyV6kl
https://paiza.io/projects/E-c33xHCCIuINJ0qWCeJ2A?language=php
https://paste2.org/3WG8vYH7