Question

Could you advise me how to remove file extensions properly in lighttpd?

So that:

1. Root directory (“/”) is not going to be rewritten to “/.php”
2. Open directory if trailing slash is missing
3. All files can be accessed without extension

Another StackOverflow thread here have answers that do not fix (1):
Rewriting with lighttpd – how to remove file extensions

Answer 1

2) and 3) are mutually exclusive – how do you expect the system to know if blahBlah is meant to be a directory blahBlah or a file blahBlah.php?
1) is probably handled by DirectoryIndex, not by your rewrite rules