senseiantonio

And is there a simpler way to do this? Such as, for example, defining the variable in the header, or something like that?

I say this because I can handle some PHP things but not to the point where I define session variables. I somehow understand the concept but not how to apply it.

Do you have any idea of a simpler way to do this?

The information there is not very clear to me. How can I do this in WordPress? Sorry, but I am not precisely a PHP expert ??

The problem is to put it outsidethe loop, in my opinion, and that is exactly what I am trying to figure out.