How can PHP access the username of a visitor's computer?

To access the username of a visitor's computer in PHP, you can use the $_SERVER['REMOTE_USER'] variable. This variable contains the authenticated user if the server requires authentication. However, please note that this method may not work in all server configurations as it relies on the server being set up to pass this information. 

if(isset($_SERVER['REMOTE_USER'])){
    $username = $_SERVER['REMOTE_USER'];
    echo "Username: " . $username;
} else {
    echo "Username not available.";
}

Keywords

PHP username visitor computer access

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