What potential pitfalls should be considered when trying to retrieve the computer name of a user through PHP?

One potential pitfall when trying to retrieve the computer name of a user through PHP is that it may not always be reliable or accurate, as the computer name is dependent on the user's system configuration and network setup. Additionally, some users may have disabled the necessary settings for their computer name to be retrieved. It's important to consider alternative methods or fallback options for identifying users if the computer name cannot be retrieved.

// Get the computer name of the user
$computerName = gethostname();

if($computerName) {
    echo "Computer Name: " . $computerName;
} else {
    echo "Unable to retrieve computer name.";
}