Do you use PHP in production for work?

I know PHP is a very prevalent language, especially for Wordpress and Drupal. However, in my professional career so far, I've not worked for an employer who uses PHP in production and all of my web developer friends seem to use node.js, .NET, Ruby, or Python. A lot of my web pen testing training revolves around PHP and I know that it is still a huge language, but I'm having difficulty gaining visibility into just how prevalent PHP is in enterprise/business web development. From what I've seen, it seems to be used mainly for smaller business sites and CMSes, but this is just pure speculation on my part so it would be helpful to hear about how you use PHP or how your business uses PHP. Thanks.