Do I correctly understand that you want that PHP emits warnings of you use globals in your script? The best way to check for this is to set error_reporting(E_ALL); as the first line of your script. It then shows all reads for variables which were not initialized before. If you feel that that is not enough, please change the status back to open.

It's not the same...

The Notice "Undefined variable" is loging when I read variable which were not initialized before.
if I would see this message I must set 
register_globals = off

I can't test all my scripts, becouse my system consist of 1600 scripts.

I can't set register_globals = off becouce that system must correctly work.

So, I want set register_globals = on, and check my logs
for notice "in this line you used globals variable".

if I found this message I would correct that script.

if I didn't find this message for month I would be sure that now I can set register_globals = on...

You can get this info with these php.ini settings:

display_errors = Off
error_reporting = E_ALL
log_errors = On
error_log = /full/path/to/my/log/filename

And how?