SETUID not executing the script as owner when executed via PHP script

I have a sh file (with setuid) that I want specific web users to be able to execute from an endpoint: -rwsr-xr-x 1 root root 59 Sep 11 09:47 restart-workers.sh The content of this file is simply: #!/bin/bash /usr/bin/supervisorctl restart laravel-worker:* When I invoke this: exec('/var/www/html/restart-workers.sh', $stdout, $status); I always get a permission denied error which I expect as PHP-FPM and Nginx are both running as the www-data user, however, I am trying to add the SETUID to the script so when the file is executed, the owner of the file is used to execute the script. Am I invoking this wrong? The sudo package is not installed. > error: , [Errno 13] Permission denied: file: /usr/lib/python3/dist-packages/supervisor/xmlrpc.py line: 557