What are some alternative technologies or approaches that PHP developers can consider for displaying progress indicators during tasks in PHP?

When performing long-running tasks in PHP, it is important to provide users with feedback on the progress of the task. One common approach is to use progress indicators, such as a loading spinner or progress bar, to show users that the task is still running. One alternative technology that PHP developers can consider for displaying progress indicators during tasks is using AJAX to update the progress indicator in real-time. By making asynchronous requests to the server to check the status of the task, developers can update the progress indicator without refreshing the entire page.

// PHP code snippet using AJAX to update progress indicator

// PHP file to check the status of the task
// task_status.php
$status = check_task_status(); // Function to check the status of the task
echo json_encode(['status' => $status]);

// JavaScript code to update progress indicator
// progress_indicator.js
function updateProgressIndicator() {
    $.ajax({
        url: 'task_status.php',
        success: function(data) {
            var status = JSON.parse(data);
            // Update progress indicator based on status
        }
    });
}

// HTML code for progress indicator
// index.html
<div id="progress-indicator"></div>
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script src="progress_indicator.js"></script>