Google Firebase notifications working on console but not on API

Question

The notification work just fine when sent from the firebase console, but don't work when sent from the API. Even when the result displays a success: {"multicast_id":5946406103096345260,"success":1,"failure":0,"canonical_ids":0,"results":[{"message_id":"0:1480093752122166%13791f60f9fd7ecd"}]}

Anyway heres the code:

<?php
// Payload data you want to send to Android device(s)
// (it will be accessible via intent extras)    
$data = array('title' => 'Notification Title' ,'message' => 'Hello World!');

// The recipient registration tokens for this notification  
$ids = array('TOKEN');

// Send push notification via Google Cloud Messaging
sendPushNotification($data, $ids);

function sendPushNotification($data, $ids)
{
    // Insert real GCM API key from the Google APIs Console        
    $apiKey = 'API_KEY';

    // Set POST request body
    $post = array(
                    'registration_ids'  => $ids,
                    'data'              => $data,
                 );

    // Set CURL request headers 
    $headers = array( 
                        'Authorization: key=' . $apiKey,
                        'Content-Type: application/json'
                    );

    // Initialize curl handle       
    $ch = curl_init();

    // Set URL to GCM push endpoint     
    curl_setopt($ch, CURLOPT_URL, 'https://fcm.googleapis.com/fcm/send');

    // Set request method to POST       
    curl_setopt($ch, CURLOPT_POST, true);

    // Set custom request headers       
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

    // Get the response back as string instead of printing it       
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

    // Set JSON post data
    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($post));

    // Actually send the request    
    $result = curl_exec($ch);

    // Handle errors
    if (curl_errno($ch))
    {
        echo 'GCM error: ' . curl_error($ch);
    }

    // Close curl handle
    curl_close($ch);

    // Debug GCM response       
    echo $result;
}

?> 

Answer 1

FCM only sends push notifications when using the notification payload, e.g.:

{ 
  "to: "registration token",
  "priority": "high",
  "notification": {
    "title": "Title",
    "text": "Text"
  },
  ...
}

}

See also Firebase Docs