Чтобы отправлять push-уведомления iOS с помощью PHP, вы можете использовать различные методы. Вот несколько примеров кода:

1. Использование APN (службы push-уведомлений Apple) HTTP/2 API:

   // Set the device token and message
   $deviceToken = 'DEVICE_TOKEN_HERE';
   $message = 'Hello, iOS push notification!';
   // Provide the path to your certificate and passphrase
   $certificateFile = '/path/to/certificate.pem';
   $passphrase = 'CERTIFICATE_PASSPHRASE';
   // Provide the URL of the APNs server based on the environment (sandbox or production)
   $apnsUrl = 'https://api.push.apple.com/notifications'; // production
   // $apnsUrl = 'https://api.sandbox.push.apple.com/notifications'; // sandbox
   // Create the payload
   $payload = [
   'aps' => [
       'alert' => $message,
       'sound' => 'default',
       'badge' => 1
   ]
   ];
   $payload = json_encode($payload);
   // Create the headers
   $headers = [
   'apns-topic: YOUR_BUNDLE_IDENTIFIER',
   'authorization: bearer ' . base64_encode($certificateFile . ':' . $passphrase)
   ];
   // Send the request
   $ch = curl_init($apnsUrl);
   curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_2_0);
   curl_setopt($ch, CURLOPT_POSTFIELDS, $payload);
   curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
   curl_setopt($ch, CURLOPT_SSLCERT, $certificateFile);
   curl_setopt($ch, CURLOPT_SSLCERTPASSWD, $passphrase);
   curl_exec($ch);
   curl_close($ch);

2. Использование сторонних библиотек, таких как apns-php:

   // Include the library
   require_once 'apns-php/autoload.php';
   // Set the device token and message
   $deviceToken = 'DEVICE_TOKEN_HERE';
   $message = 'Hello, iOS push notification!';
   // Create a new APNS message
   $apnsMessage = new ApnsPHP_Message($deviceToken);
   // Set the message payload
   $apnsMessage->setText($message);
   // Create a new APNS service
   $apnsService = new ApnsPHP_Push(ApnsPHP_Abstract::ENVIRONMENT_SANDBOX, 'PATH_TO_YOUR_CERTIFICATE.pem');
   // Add the message to the service
   $apnsService->add($apnsMessage);
   // Send the push notifications
   $apnsService->send();
   // Disconnect from the APNS server
   $apnsService->disconnect();

3. Использование Firebase Cloud Messaging (FCM) с библиотекой fcm:

   // Include the library
   require_once 'vendor/autoload.php';
   // Set the device token and message
   $deviceToken = 'DEVICE_TOKEN_HERE';
   $message = 'Hello, iOS push notification!';
   // Initialize the Firebase Cloud Messaging client
   $firebase = new \Firebase\Firebase();
   // Set the API key
   $firebase->setApiKey('YOUR_API_KEY');
   // Create the notification payload
   $notification = new \Firebase\Notification\Notification();
   $notification->setTitle('Notification Title');
   $notification->setBody($message);
   // Send the push notification
   $firebase->sendNotification($deviceToken, $notification);