Send iOS Push notification in php with .p8 file

Question

Apple has updated their push notification service and the certificate file received is now a .p8 file. There are many examples online of how to send a push notification with the .pem file but I can't find anything for a .p8 file. Does anyone have any code that works with the .p8 file?

Answer 1

With the script below I'm able to send token-based push notifications with the .p8 file.

The minimum version of curl supporting this is 7.38.0, and it must be compiled with the flag --with-nghttp2 and openssl >= 1.0.2

<?php

  $keyfile = 'AuthKey_AABBCC1234.p8';               # <- Your AuthKey file
  $keyid = 'AABBCC1234';                            # <- Your Key ID
  $teamid = 'AB12CD34EF';                           # <- Your Team ID (see Developer Portal)
  $bundleid = 'com.company.YourApp';                # <- Your Bundle ID
  $url = 'https://api.development.push.apple.com';  # <- development url, or use http://api.push.apple.com for production environment
  $token = 'e2c48ed32ef9b018........';              # <- Device Token

  $message = '{"aps":{"alert":"Hi there!","sound":"default"}}';

  $key = openssl_pkey_get_private('file://'.$keyfile);

  $header = ['alg'=>'ES256','kid'=>$keyid];
  $claims = ['iss'=>$teamid,'iat'=>time()];

  $header_encoded = base64($header);
  $claims_encoded = base64($claims);

  $signature = '';
  openssl_sign($header_encoded . '.' . $claims_encoded, $signature, $key, 'sha256');
  $jwt = $header_encoded . '.' . $claims_encoded . '.' . base64_encode($signature);

  // only needed for PHP prior to 5.5.24
  if (!defined('CURL_HTTP_VERSION_2_0')) {
      define('CURL_HTTP_VERSION_2_0', 3);
  }

  $http2ch = curl_init();
  curl_setopt_array($http2ch, array(
    CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_2_0,
    CURLOPT_URL => "$url/3/device/$token",
    CURLOPT_PORT => 443,
    CURLOPT_HTTPHEADER => array(
      "apns-topic: {$bundleid}",
      "authorization: bearer $jwt"
    ),
    CURLOPT_POST => TRUE,
    CURLOPT_POSTFIELDS => $message,
    CURLOPT_RETURNTRANSFER => TRUE,
    CURLOPT_TIMEOUT => 30,
    CURLOPT_HEADER => 1
  ));

  $result = curl_exec($http2ch);
  if ($result === FALSE) {
    throw new Exception("Curl failed: ".curl_error($http2ch));
  }

  $status = curl_getinfo($http2ch, CURLINFO_HTTP_CODE);
  echo $status;

  function base64($data) {
    return rtrim(strtr(base64_encode(json_encode($data)), '+/', '-_'), '=');
  }

?>