PHP variable passing

PHP variable pass for help?
Excuse me, I have set up a public file for saving information conn.php

$isLog = true;

I want to put $islog = False in a.php;

But I query $islog or true in b.php.


Excuse me, is it not understood?
------Solution--------------------
To achieve the effect you want, use the session to save it.
------Solution--------------------
$islog = True within the conn.php file;

You refer to conn.php in a.php, change the value to False but conn.php the value of the file itself does not change
The value obtained when you b.php re-referencing conn.php must still be true

To achieve your results, use get pass, with the session can be
------Solution--------------------
If you want to change the value of the loaded variable on the page, simply override the variable on the current page, paying attention to loading the page and overriding the variable order.

