I have a question regarding PHP and Wordpress.
I recently started using Wordpress for a simple website but there is still one thing that I just don't understand. Lets say I made a cool website in php that also cointains my header, my footer and my menu. How do I implement the Wordpress CMS so that someone else can add an item in the menubar that I made, instead of adding an item in a theme made by someone else? I have a hard time finding such tutorials because most of them are for people with no programming interests and because of that they don't explain such things.