Ioncube Decoder Php 81 Upd -
If the vendor is defunct and you need similar features, consider rewriting the business logic yourself. Use the encoded script as a black box (observe inputs/outputs). This is legal if you do not copy code directly.
sudo systemctl restart php8.1-fpm
Verify:
php -m | grep ionCube
Expected output: ionCube Loader
If you cannot run an encoded script on PHP 8.1 and cannot decode it, here are your only legal options: ioncube decoder php 81 upd