How can PHP developers ensure that form data from multiple widgets on a page is processed correctly without reloading the entire page?

When processing form data from multiple widgets on a page without reloading the entire page, PHP developers can use AJAX to send asynchronous requests to the server and update specific parts of the page dynamically. This allows for a smoother user experience and eliminates the need to refresh the entire page each time a form is submitted.

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Process form data here

    // Return a JSON response
    $response = array("success" => true, "message" => "Form data processed successfully");
    echo json_encode($response);
    exit;
}
?>