Which section of PHP to study to implement the specified functionality?

Question

PHP

Hello. I started learning PHP recently, I know the basics
, maybe a little more, but suddenly I needed to make some functionality for the site, namely:
some elements)
2. Adding news with pictures and text;
3. Adding shares and more.
Don’t throw stones too hard, you have to study everything on the fly, I know that this is wrong, but if you tell me the right direction, what to study to add such functionality, I will be very grateful.
PS Ajax and other things are also on the site, but I have no questions here.

Answer 1

Php knows nothing about sliders, news and pictures. This is a broad profile language, therefore the sections in it are abstract, basic.
Therefore, you first need to understand how you will implement this functionality, in pseudocode. If somewhere in your pseudocode there is a step "Add a row to the database" - study the database; if there is a step "Save the uploaded file to the server" - work with files and forms, etc.