I have been a web developer for 4 years. I focus on the backend programming of websites. By this, I mean most of the work I do makes a website function, but you cant really “see it”. For example, when you submit a form, I code the logic to validate the data and then process it by emailing it to someone or insert into a database.
I support web designers that focus on the front end development (how the website looks) and need PHP programming and MySQL database development integrated into their website design to build a functional website. I have developed numerous PHP applications along with designing and developing MySQL databases too.