I want to implement a message into a simple php application after December 12 that reminds the client that there is an outstanding bill to be paid.
The message should appear on the header of every page.
Here are the special requirements:
- This message should be untraceable in the source code (meaning: it should almost be impossible to remove by another PHP developer, even with a debugger)
- The repository (SVN) should not have a previous revision to restore the application before this change.
- An easy way to remove the message from the application (and changes to the repository) when payment is received.