Should I learn PHP and SQL to be a good Front End Web Developer

Question

i have basic understanding of HTML, CSS and JavaScript

Answer 1

if you want to be a good front end web developer you should learn
1- client side (front-end) technologies such as html , css and its frameworks such as bootstrap , javascript and its frameworks such as angular ect..
2- server side (back-end ) technologies such as php , asp.net , javaee , paython ect ..
3- databse technologies such as sql server, oracle ,mysql ect..
to be a good developer its is not only about learning new technologies its is also about experience and have the ability of solving problems and thinking out of the box

Answer 2

You mean back-end, and yes you need to learn that.

Answer 3

If you want to be a good Front-End Web Developer you should be a good Back-End Developer as well. This requires to be at least familiar with PHP and SQL because most of web sites/applications are based on server side technologies.