Send informations via Firebase Cloud Messaging - php

Question

I am currently trying to make use of cloud messaging for my Android app. The server is sending messages via PHP using php-curl.
The problem is that the server's response is always:
401: Unauthorized
I use the WebAPI Access key from the Firebase Console for my App, so this is definitively the right one. Below is the code I use to send the data:
<?php
$fields = array(
'to' => "<MY-RECIPIENT-TOKEN>",
'notification' => array(
'body' => 'Test message :)',
'title' => 'Test',
'icon' => 'myicon',
'sound' => 'mySound'
)
);
$headers = array(
'Authorization:key=<MY AUTH KEY IS HERE>',
'Content-Type:application/json'
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://fcm.googleapis.com/fcm/send');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($fields));
$result = curl_exec($ch);
curl_close($ch);
echo $result;
The MY-RECIPIENT-TOKEN is received from the App and the MY AUTH KEY IS HERE is the key from the Firebase Console.
What am I missing here?

Answer 1

Nevermind. The Problem is not in the code, the code is fine. If someone stumbles upon this: There are 2 keys in your FCM Console. When you go to your Project Settings you will find the Web-API-Key. This is not the key you are looking for! You need to go to Settings -> Cloud Messaging. There you will see a much longer Server key. THIS is the key you want to use!