Should one minify server code when it's in production?
i do not believe this offers any benefit to server side code since the server evaluates the code and doesn't actually send it down. If you are looking to optimize production code you can look into setting up a compiler cache such as APC for PHP
When it comes to the frontend code you always minify it (remove white spaces, comments etc) in production.
Should one do the same with server code? I usually have a lot of comments in my server files. But I have never heard about people doing so.
Wouldn't the server run faster if the code was optimized in the same way?