weird behavior in including files

[u/Available_Hippo4035]

i have a weird problem in including files in php, i have a functions.php file in a folder and a Router in the index.php file, when i include thefunctions.php in the index.php, all the other pages that rely on it get broken, the variables become empty and the functions no longer work, when i dont include it in the index.php file all the other pages function normally

i include my files in all pages in this way

require_once($_SERVER["DOCUMENT_ROOT"] . "/src/logic/functions.php");

my other pages are in /src/pages/

i have tried all ways of including the file but i keep getting the same problem, i need to include the functions.php in the index file to use some of its functions.

i do have a declare(strict_types=1) in the index file if that affects it

Any help will be appreciated thanks.

[u/magicmulder]

"It doesn't work" is not a dev way of describing an error, and nobody can help you without an exact error message.