This can be done by adding Guests are not allowed to view code. into php.ini.


It is usually found in /etc directory, but to be sure, type
Guests are not allowed to view code. to find our for sure where yours is.

You can easily find out if you have the upload temp dir set to anything by typing:
Guests are not allowed to view code.

if it comes back with only
Guests are not allowed to view code.

Then go into the file
Guests are not allowed to view code.

And then press Ctrl+w and type Guests are not allowed to view code. once you find the line, uncomment the line and change it to
Guests are not allowed to view code.

Restart apache
Guests are not allowed to view code.