ionCube PHP 8.1 support FAQ - "We're almost ready"
It has been a long time coming and definitely slower than we would have liked but we’re almost at the point of release for ionCube Encoder 12 which will support PHP 8.1. The estimate we have been working towards for quite a while now has been ‘around the end of June’ and it looks like that estimate isn’t far off with major testing progressing well.