I learn php. Now, what should i learn?

Answer 1

I see you finished HTML and CSS course, and currently learning JavaScript, PHP and SQL side by side, looks like you already know where you're going, just keep learning and you'll figure out the answer eventually.

Hth, cmiiw

Answer 2

You must at least know the basic of HTML and CSS by now.
You need to complete PHP course, then study Mysql course.

Code Playground is your best tool. While you're studying the courses, you should test out the codes you just learnt from Code Playground.

Answer 3

sql
also:
html->css->js