How to configure phpstorm to show variables from index file?

Question

phpstorm

Good day !
The problem is:
I have a self-written MVC framework with the following folder structure:

Question 1: How can I make phpstorm inside application see the variables declared in index.php ?
Question 2: How can I make phpstorm start searching inside any child folder not from the directory in which the file is located, but directly from the directory in which index.php is located, that is, the root of the project?

Answer 1

For question 1:
Use phpdoc comments.
In any file write

/**
 *  @var int $myVar
 *  @var CustomType $myVar2
 */

Yes, this is extra work. No, there's nowhere to go.
Right click on the web root folder and mark it as "Resource Root". You can mark several such directories.