Sending Push Notification On Multiple Devices

I'm trying to make an push notification on my android app by following this tutorial http://www.androidhive.info/2012/10/android-push-notifications-using-google-cloud-messaging-gcm

Solution 1:

I am not having exp in PHP but I can tell you the places where you can modify your code.

Make an array of ids and put into registration_ids.

At the end you must have all ids into registatoin_ids at

$fields = array(
            'registration_ids' => $registatoin_ids, // HERE IT IS'data' => $message,
        );

into send_notification($registatoin_ids, $message).

In current it having single reg_id so it is sending notification to single device.