You can turn on register_globals in your php.ini file. To do this, please create a php.ini file in the directory you need register_globals to be turned on. Then add the following line to your php.ini file:
register_globals = On
NOTE: The php.ini file should be added to every directory and subdirectory where the changes are required.
can learn how to find and edit php.ini on our shared servers here:
How to edit php.ini file on Shared Hosting servers (Stellar, Stellar Plus plans and old Value, Professional, Ultimate plans)
How to edit php.ini file on Business servers (Stellar Business plan)