https://paiza.io/projects/25lP2rYQ0UzR6RbI-xtmDA?language=php
https://paste2.org/UO4c2sM4
https://hackmd.io/s/SJzuWSVnJg
https://paiza.io/projects/AZK8buq6F2uXfaf631x-KQ?language=php
https://paste2.org/cNNf9dOd