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I apologize for the confusion. To implement a Web Push Notification server in PHP without using Minishlink\WebPush\VAPID, you can follow these steps:

  1. Set up your project:

Create a new folder for your project and set up a new PHP file (e.g., push_server.php) to handle push notifications.

  1. Install required dependencies:

You don't need any external libraries for this approach.

  1. Create a push notification endpoint:

In your push_server.php, create an endpoint that will handle the subscription data sent from the client-side JavaScript:

<?php // Endpoint to handle push subscription from the client if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['subscription'])) { // Get the subscription data from the request $subscription = json_decode($_POST['subscription'], true); // Save the subscription data to a database or file (you should implement this) // Send a response indicating the subscription was successful http_response_code(201); echo json_encode(['success' => true]); exit; } http_response_code(400); echo json_encode(['error' => 'Bad request']); exit;
  1. Sending Push Notifications:

To send push notifications to subscribed clients, you can create another PHP script (e.g., send_notification.php). This script will be responsible for sending the push notifications to the subscribed clients.

<?php // Load your saved subscriptions from the database or file $subscriptions = getSubscriptionsFromDatabase(); // You should implement this function // Set the payload data for the push notification $message = 'Hello, this is a push notification!'; // Loop through each subscription and send the notification foreach ($subscriptions as $subscription) { // Define the notification payload $payload = json_encode(['title' => 'Push Notification', 'body' => $message]); // Replace the following with your own VAPID keys $publicKey = 'your_vapid_public_key'; $privateKey = 'your_vapid_private_key'; // Generate the encrypted data and the headers for the request $encryptedData = ''; $headers = [ 'TTL' => 300, // Time to Live for the notification 'Content-Type' => 'application/json', 'Authorization' => 'Bearer ' . base64_encode($privateKey), ]; // Send the push notification $ch = curl_init($subscription['endpoint']); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_POSTFIELDS, $payload); curl_setopt($ch, CURLOPT_HTTPHEADER, $headers); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); $response = curl_exec($ch); curl_close($ch); // Process the response as needed (e.g., check for errors) // ... }

Remember to replace 'your_vapid_public_key' and 'your_vapid_private_key' with your actual VAPID keys, which can be generated using the appropriate tools or services.

Please note that this example is a basic implementation to demonstrate the concept. In a real-world scenario, you would need to handle proper error checking, managing subscriptions, and securely storing VAPID keys. Additionally, you might want to implement a cron job or other scheduling mechanisms to periodically send push notifications to subscribers.