php curl APNs push

apns.php

<?php

// passed in php 7.4

$service_url = 'https://api.push.apple.com/3/device/';
$token = '07cd****3217****6289****94999228d7b45339fbafdf08****8f83****499b';
$headers = array();
$header[] = 'apns-topic:com.xxxxx.xxapp'; // bundle-id
$payload = '{"aps":{"alert":"hello","sound":"msg_high.m4a"}}';

$ch = curl_init();
curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_2_0);
curl_setopt($ch, CURLOPT_SSLCERT, '/var/www/cer.pem'); // client certificate
curl_setopt($ch, CURLOPT_SSLCERTPASSWD, ''); // client certificate password
# curl_setopt($ch, CURLOPT_SSLCERTYPE, 'P12'); // support p12 cert
curl_setopt($ch, CURLOPT_URL, $service_url . $token);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_POSTFIELDS, $payload);
curl_setopt($ch, CURLOPT_HEADER, TRUE); // show response header (get apns-id)
curl_setopt($ch, CURL_RETURNTRANSFER, 1);

$result = curl_exec($ch);

curl_close($ch);

echo $result;