<?php
// API access key from Google API's Console
define('API_ACCESS_KEY', 'xxxxxxxxxx');
$registrationIds = array(''); // Getted from Chrome console when you start the code above (app.js)
// prep the bundle
$msg = array
(
  'message' => 'Notification content, Hello world',
  'title' => 'Notification title',
  'subtitle' => 'This is a subtitle. subtitle',
  'tickerText' => 'Ticker text here...Ticker text here...Ticker text here',
  'vibrate' => 1,
  'sound' => 1,
  'largeIcon' => '',
  'smallIcon' => ''
);
$fields = array
(
  'registration_ids' => $registrationIds,
  'notification' => array(
    'title' => 'Titre test',
    'body' => 'Notif Content',
    'payload' => array('name' => 'Nick', 'lastname' => 'Fury')
  ),
);

$headers = array
(
  'Authorization: key=' . API_ACCESS_KEY,
  'Content-Type: application/json'
);

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://android.googleapis.com/gcm/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;