Are there specific PHP functions or techniques that can help prevent the "Resubmit Form Confirmation" message?

When a form is submitted and the user refreshes the page, the browser may prompt a "Resubmit Form Confirmation" message, which can be annoying for users. To prevent this message, one technique is to use the Post/Redirect/Get (PRG) pattern in PHP. This involves processing the form submission, then redirecting the user to a different page using the header() function to prevent form resubmission.

if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Process form submission
    // Redirect to a different page to prevent form resubmission
    header("Location: success.php");
    exit;
}