To disable register_globals, create a file using any simple text editor (notepad is fine) and name it php.ini. Write the following code in the file:
register_globals = OFF
Then, upload the file to any folder you want to disable register globals in, or upload it to your public_html folder to disable register globals in your domain level.
The same method applies to enable register_globals, except the code in the php.ini file will look like this:
register_globals = ON
Enabling register_globals is a MAJOR security hole in your website!

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