ionCube Loader runs PHP files encoded by a software publisher. Enabling it can resolve a missing-loader requirement, but the loader, PHP version and encoded application must all be compatible. It does not install or license the application itself.
IN THIS ARTICLE
Check access and requirements
Read the application publisher's current PHP and ionCube requirements and record the active runtime. Some encoded packages support only particular PHP versions. Keep a working copy of the application and its configuration before changing that runtime.
01 Change the setting
- In Plesk, select the correct subscription and open PHP Selector from the available sidebar or additional tools. This guide applies to Linux subscriptions where the CloudLinux integration is installed. Windows Plesk uses its own PHP configuration.
- Check the active PHP version and which websites the selector change will affect. Plesk also has a native PHP Settings page for each domain. A CloudLinux setting will not automatically override a different Plesk PHP handler. Confirm which handler serves the website first.
- Open Extensions for the PHP version actually used by the website. Locate ioncube_loader or the ionCube entry presented by the provider.
- Enable the entry and save if the interface requests it. If it is missing, ask support whether the required loader is available for this PHP version; uploading a random loader binary into the public website is not a substitute.
- Reload the application's requirements check. Where the software also runs a cron task, verify the CLI PHP executable and loader separately.
Confirm the expected result
Use the application's own requirements screen to confirm that the loader is available and compatible, then perform a normal administrative task. For a billing system, also check its scheduled task status so that the browser application and automation both work.
Why can encoded software still fail after I enable ionCube Loader?
An error about files encoded for another PHP version needs the appropriate software build or supported PHP combination, not repeated checkbox changes. Keep any diagnostic file access restricted and remove it after use. Send support the loader error, application version and selected PHP version without including license secrets.