You are working on a project where you need to get the user's IP address. Which of the following PHP server variables will you use?
- $_SERVER['HTTP_USER_AGENT']
- $_SERVER['HTTP_X_FORWARDED_FOR']
- $_SERVER['REMOTE_ADDR']
- $_SERVER['HTTP_REFERER']
The user's IP address is typically stored in $_SERVER['REMOTE_ADDR'] in PHP. This server variable contains the IP address of the user who is accessing the web page.
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