Unix服务器上的高级文件权限

Question

I've got 3 folders that contain PHP scripts:

- core 
- custom_modules_1 (cm1)
- custom_modules_2 (cm2)

The core is executed by Apache and includes (require_once) files from either cm1 or cm2. It never includes cm1 & cm2 at the same time.

But the problem occurs when cm1 includes a file from cm2, which should be prevented, but how?

I'm running a VPS CentOS server with cPanel, so ACL is probably not an option since it could break cPanel.

Answer 1

Thank you for your answers, but the only way I've managed to force the wanted restrictions was using php auto_prepend_file to append a file that does certain checks inside every php file that is included.