The introduction of support for PHP 8.1 brought several key security and performance features:
Finding a reliable is difficult because ionCube files are compiled into bytecode, meaning the original source code is effectively gone and only reconstructed through reverse-engineering. While official tools from ionCube only allow for encoding or loading (executing) files, several third-party services claim to support decoding for newer PHP versions. Available Decoding Options for PHP 8.1 ioncube decoder php 81 full