Visitor tracker in WordPress with real-time only visible for admins

gistfile1.txt

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Visitor tracker in WordPress with real-time updates and a smooth pop-up for admins.

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// Hook to add the visitor tracking and popup for admins
add_action('wp_footer', 'admin_visitor_tracker');

function admin_visitor_tracker() {
    if (!current_user_can('administrator')) {
        return;
    }

    // Generate a temporary session ID
    if (!session_id()) {
        session_start();
    }
    $session_id = session_id();

    // Update visitor data
    $visitors = get_transient('online_visitors') ?: array();
    $visitors[$session_id] = time();
    set_transient('online_visitors', $visitors, 300); // Store for 5 minutes

    // Output HTML and JavaScript
    ?>
    <style>
        #visitor-popup, #visitor-count-button {
            position: fixed;
            right: 20px;
            background: white;
            color: #333;
            padding: 15px;
            border-radius: 5px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            z-index: 9999;
            font-size: 14px;
            font-family: Arial, sans-serif;
            transition: opacity 0.5s ease-in-out, transform 0.5s ease-in-out;
        }
        #visitor-popup {
            display: none;
            bottom: 80px;
            transform: translateY(20px);
            opacity: 0;
        }
        #visitor-count-button {
            bottom: 20px;
            cursor: pointer;
            opacity: 0;
            transform: translateY(20px);
            display: none;
        }
        #visitor-count-button:hover {
            background-color: #f0f0f0;
        }
    </style>
    <div id="visitor-popup">
        <p>New visitor entered</p>
        <p>Online visitors: <span id="popup-visitor-count">0</span></p>
    </div>
    <div id="visitor-count-button">
        Online: <span id="button-visitor-count">0</span>
    </div>
    <script>
    jQuery(document).ready(function($) {
        var lastCount = 0;
        var updateAfterPopup = false; // Flag to update the button count after popup

        function updateVisitorCount() {
            $.ajax({
                url: '<?php echo admin_url('admin-ajax.php'); ?>',
                type: 'POST',
                data: {
                    action: 'update_visitor_count',
                    nonce: '<?php echo wp_create_nonce('visitor_tracker_nonce'); ?>'
                },
                success: function(response) {
                    if (response.count > lastCount) {
                        updateAfterPopup = true; // Set flag to update after popup
                        $('#visitor-count-button').animate({opacity: 0, transform: 'translateY(20px)'}, 500, function() {
                            $(this).css('display', 'none');
                            $('#visitor-popup').css({display: 'block', opacity: 0, transform: 'translateY(20px)'})
                                .animate({opacity: 1, transform: 'translateY(0)'}, 500)
                                .delay(5000)
                                .animate({opacity: 0, transform: 'translateY(20px)'}, 500, function() {
                                    $(this).css('display', 'none');
                                    $('#visitor-count-button').css({display: 'block', opacity: 0, transform: 'translateY(20px)'})
                                        .animate({opacity: 1, transform: 'translateY(0)'}, 500, function() {
                                            if (updateAfterPopup) {
                                                $('#button-visitor-count').text(response.count); // Update button count after popup is hidden
                                                updateAfterPopup = false; // Reset flag
                                            }
                                        });
                                });
                        });
                    } else {
                        $('#button-visitor-count').text(response.count); // Update button count immediately if no new visitor
                    }
                    $('#popup-visitor-count').text(response.count); // Always update popup count
                    lastCount = response.count;
                }
            });
        }

        // Update immediately and then every 5 seconds
        updateVisitorCount();
        setInterval(updateVisitorCount, 5000);

        // Clear session when leaving the page
        $(window).on('beforeunload', function() {
            $.ajax({
                url: '<?php echo admin_url('admin-ajax.php'); ?>',
                type: 'POST',
                async: false,
                data: {
                    action: 'remove_visitor',
                    nonce: '<?php echo wp_create_nonce('visitor_tracker_nonce'); ?>'
                }
            });
        });
    });
    </script>
    <?php
}

// AJAX handler to update visitor count
add_action('wp_ajax_update_visitor_count', 'update_visitor_count');
add_action('wp_ajax_nopriv_update_visitor_count', 'update_visitor_count');

function update_visitor_count() {
    check_ajax_referer('visitor_tracker_nonce', 'nonce');

    $visitors = get_transient('online_visitors') ?: array();
    $current_time = time();

    // Remove inactive visitors
    foreach ($visitors as $id => $time) {
        if ($current_time - $time > 300) {
            unset($visitors[$id]);
        }
    }

    set_transient('online_visitors', $visitors, 300);

    $count = count($visitors);

    wp_send_json(array('count' => $count));
}

// AJAX handler to remove visitor when leaving
add_action('wp_ajax_remove_visitor', 'remove_visitor');
add_action('wp_ajax_nopriv_remove_visitor', 'remove_visitor');

function remove_visitor() {
    check_ajax_referer('visitor_tracker_nonce', 'nonce');

    $session_id = session_id();
    $visitors = get_transient('online_visitors') ?: array();

    if (isset($visitors[$session_id])) {
        unset($visitors[$session_id]);
        set_transient('online_visitors', $visitors, 300);
    }

    wp_send_json_success();
}

// Track all visitors, not just admins
add_action('wp_head', 'track_visitor');

function track_visitor() {
    if (!session_id()) {
        session_start();
    }
    $session_id = session_id();

    $visitors = get_transient('online_visitors') ?: array();
    $visitors[$session_id] = time();
    set_transient('online_visitors', $visitors, 300);
}