Why doesn't PHPStorm see variables in an include file?

Question

phpstorm

Hello! Tell me, why if you include()connect a file in the code and then use a variable from this file, then PHPStorm will underline it as undefined (undefined variable)?
Example:

include ('nginxconf.php');
        include ('apacheconf.php');
        file_put_contents("/home/user/$this->mainname.conf" , $apacheconf);
        file_put_contents("/home/user/$this->mainname" , $nginxconf);

nginxconf.php :

<?php
$nginxconf = "";

apacheconf.php

<?php
$apacheconf = "";

When you start the program everything goes fine.

Answer 1

Here is a fresh answer to your question, which also interested me today: https://www.jetbrains.com/help/phpstorm/php-undefi...
and here: https://stackoverflow.com/questions/22476778/ phpst...