A popular tool on GitHub is oppa26/ioncube‑decode . It is a CLI tool that works by sending encoded files to a remote service called decodephp.io via an API key. It claims to support Ioncube versions 14 and 15, and PHP 8.1 through 8.4.
If a vendor refuses to cooperate or is no longer active, migrate your system to an open-source alternative that gives you full control over your codebase. decode ioncube online full