How to Disable PHP in a Directory and Its Subdirectories while Enabling SSI with .htaccess?

Disabling PHP in a Directory and Its Subdirectories with .htaccess

For web projects that involve user-uploaded content, it becomes necessary to disable PHP execution in certain directories to prevent security vulnerabilities. When faced with the requirement to disable PHP while allowing server-side includes (SSI) in a directory structure like this:

- /USERS
    - /DEMO1
    - /DEMO2
    - /DEMO3
    - /etc... (each user has their own directory here)
- index.php
- control_panel.php
- .htaccess

One effective solution is to modify the .htaccess file located in the root directory:

php_flag engine off

By adding this line to the .htaccess file, the PHP engine will be disabled in the /USERS directory and all its subdirectories. This will prevent PHP scripts from executing within those directories. However, SSI (Server-Side Includes) will still be allowed, as it is not affected by the engine off flag.

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