Apple Push Notification SSL Error - php

Question

I got the following error message, when trying to send a push notif via PHP:
stream_socket_client(): SSL operation failed with code 1. OpenSSL Error messages:
error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure
I guess it could be the issue with the SSL3 problems in the past? But does this mean the script is not usable that way anymore? What do I need to change, as i have no clue. I checked all certificates and they are working. I can connect to the sandbox at apple via terminal with the certificates and the handshake seems to work via terminal.
This is my PHP Script
class PushNotification {
public function sendTestMessageToDevice($message){
$devicetoken = Config::get('mfsconfig.PushNotificationTest.deviceToken');
$passphrase = Config::get('mfsconfig.PushNotificationTest.passPhrase');
$ctx = stream_context_create();
stream_context_set_option($ctx, 'ssl', 'local_cert', 'ck.pem');
stream_context_set_option($ctx, 'ssl', 'passphrase', $passphrase);
// Open connection to APNS
$fp = stream_socket_client('ssl://gateway.sandbox.push.apple.com:2195', $err, $errstr, 60, STREAM_CLIENT_CONNECT|STREAM_CLIENT_PERSISTENT, $ctx);
if (!fp) {
exit("Failed to connect: $err $errstr" . PHP_EOL);
}
echo 'Connected to APNS' . PHP_EOL;
// Create the payload body
$body['aps'] = array(
'alert' => $message,
'sound' => 'default'
);
// Encode the payload as JSON
$payload = json_encode($body);
// build a binary notification
$msg = chr(0) . pack('n', 32) . pack('H*', $devicetoken) . pack('n', strlen($payload)) . $payload;
// Send to server
$result = fwrite($fp, $msg, strlen($msg));
if(!result) {
echo 'Message not delivered' . PHP_EOL;
} else {
echo 'Message successfully delivered' . PHP_EOL;
}
fclose($fp);
}

Answer 1

I think I got the solution:
Click the disclosure arrow next to your certificate in Keychain Access and select the certificate and the key.
Right click and choose Export 2 items
Choose the p12 format from the drop down and name it cert.p12.
Now covert the p12 file to a pem file:
$ openssl pkcs12 -in cert.p12 -out apple_push_notification_production.pem -nodes -clcerts
After uploading the newly created pem file, everything works smoothly!