When a WordPress website is loaded, it runs on code. Once upon a time, that code was strictly HTML. Now, it’s a few different things, typically CSS, HTML and JavaScript. That’s the front-of-the-house, though. The waitstaff that all visitors see. Back-of-the-house runs a bit differently; there are different cooks in the kitchen, and they influence a little bit of everything. When it comes to WordPress, the programming language PHP is what’s really running the show. You’ll find PHP in everything…