What potential pitfalls should be considered when trying to display notifications in PHP without user interaction?

One potential pitfall when displaying notifications in PHP without user interaction is overwhelming the user with too many notifications at once. To address this, you can implement a queue system to manage the notifications and ensure that only a certain number are displayed at a time. Additionally, consider implementing a timeout feature to automatically dismiss notifications after a certain period to prevent cluttering the user interface.

// Implementing a queue system for notifications
$notifications = []; // Initialize an array to store notifications

// Add a new notification to the queue
function addNotification($message) {
    global $notifications;
    $notifications[] = $message;
}

// Display notifications with a limit
function displayNotifications($limit = 3) {
    global $notifications;
    
    for ($i = 0; $i < min(count($notifications), $limit); $i++) {
        echo $notifications[$i] . "<br>";
    }
}

// Example usage
addNotification("New message received");
addNotification("Reminder: Meeting at 2pm");
addNotification("Error: Invalid input");

displayNotifications();