https://paiza.io/projects/BlC9kai3MOo0wQLGYKgNsQ?language=php
https://paste2.org/2m4aej0g
https://hackmd.io/s/HkMO-yNpkg
https://paiza.io/projects/_bnwm5I0T8BMDmvEznnK4Q?language=php
https://paste2.org/2KCtcHOZ