In my experiences I created a social network using Google map API from scratch for Formell- Aidant Familiaux. Diabhelp website was first coded from scratch in PHP and then remade with Symfony2. I also create an entire webApplication for radio protection logistic (still under development). I do all my personal websites in PHP. I can also create websites on wordpress (for example this one).
Others Web Technology
ELK Stack (Elastic search, Kibana..)
SQL (mySql, postgresql, sqllite..)
There is a lot of other, web Technologies and have been working on some projects with them. As you understand, I can quickly learn a technology and create something great for you !