How to find where a variable is used in PHP?

Question

PHP

There is an index.php page in which the catalog component is connected, the $filter_site global variable is declared on this page and a named array is placed in it. Searching for a project in Atom does not find anything. How to find where this variable is used? Can it be possible to write something to the variable that will help to find the place where it is used?

Answer 1

most likely the filter is used in the form "FILTER_NAME" => "filter_site" when initializing some component (we're talking about Bitrix, right?). That is, search for ""filter_site", without the dollar sign

Answer 2

Use a normal IDE. Here are a few, in flavor and color:
1. PhpShtorm
2. NetBeans
All you have to do is hold down ctrl and click on a variable.

Answer 3

Total commander -> Alt + F7

Answer 4

Look in the dbconn.php file