Is there an application under WIndows that can override hotkeys in an arbitrary application?

Question

Skype

I need this in order to disable the Ctrl + R combination in Skype, because of such a problem (quote from the Skype forums):

I am a front-end developer, and as a result of my work, I have to constantly refresh the browser web page using the Ctrl + R key combination. The same combination in Skype recently starts a new call.
It happens that I miss the browser window and accidentally press Ctrl + R in the skype window, as a result I call people at a time when I'm not going to do it.
This is very annoying. Is there any method to completely disable hotkeys in Skype?

Skype support, of course, said that I was an evil pinocchio to myself.

Answer 1

You can write a simple script in Autoit or Autohotkey. When you press Ctrl+R, determine the active window. If the window is not skype, then send Ctrl+R, and if skype, then do nothing.

Answer 2

!empty instead of empty, because in this case if the variable is empty - if works.
in the case of !empty (if not empty) - get what you need

Answer 3

"non-empty" can be of 2 types as far as I remember, either null or empty in case of empty it will work if ($id_user="")... but !empty will be "scientifically" more correct, but for null even if (is_null($ id_user))...