What potential issue is the user facing with the IP logger script in PHP?

The potential issue the user is facing with the IP logger script in PHP is that it may not accurately capture the user's IP address due to the use of $_SERVER['REMOTE_ADDR']. To solve this issue, the user can use $_SERVER['HTTP_X_FORWARDED_FOR'] instead, which will capture the correct IP address even if the user is behind a proxy server. 

// Get the correct IP address of the user even if behind a proxy server
$ip_address = $_SERVER['HTTP_X_FORWARDED_FOR'] ?? $_SERVER['REMOTE_ADDR'];

Keywords

IP logger script PHP error handling security vulnerability

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