Register Globals (register_globals):
Whether or not to register the EGPCS (Environment, GET, POST, Cookie, Server) variables as global variables.
We cannot disable register_globals from the script side (using ini_set, like we normally might), but we can use an .htaccess files to do this. Some hosts also allow you to have a php.ini file on the server.
Disabling with .htaccess
php_flag register_globals 0
Disabling with php.ini
register_globals = Off
