If you're having trouble managing PHP versions when CageFS is disabled, it's possible that CageFS is providing a necessary layer of isolation and configuration that allows for multiple PHP versions to coexist on your system. Without CageFS, you might need to use alternative methods to manage PHP versions.

Here are a few steps you can take to address this issue:

1. Re-enable CageFS (if possible): CageFS is a valuable tool for isolating users and their resources on a server. If possible, consider re-enabling CageFS and then configure PHP versions within the CageFS environment.

2. Use PHP Version Managers: Tools like phpbrew or phpenv allow you to easily install and switch between multiple PHP versions on a single system. These managers can be used independently of CageFS.

3. Manual PHP Installation: If you don't want to use a version manager, you can manually install different versions of PHP on your server. This involves downloading and compiling PHP from source. Keep in mind that this method requires more manual maintenance.

4. Use Docker: Docker can provide a way to run different PHP versions in isolated containers. Each container can have its own PHP installation, allowing you to manage versions independently.

5. Consider a Web Hosting Control Panel: If you're managing a web hosting environment, a control panel like cPanel or Plesk can simplify the process of managing PHP versions.

6. Check for Conflicting Configurations: Ensure there are no conflicting configurations in your web server settings or PHP configuration files that might be causing issues.

7. Consult with your Hosting Provider: If you're using a hosting service, reach out to your provider's support team. They might have specific recommendations or solutions for managing PHP versions in your environment.

Remember that managing PHP versions without CageFS requires careful consideration of compatibility and security concerns. Always test changes in a controlled environment before applying them to a production server.