Send notif firebase

notif.php

<?php
// API access key from Google API's Console
define( 'API_ACCESS_KEY', 'API_KEY_FIREBASE' );

// device id
$registrationIds = array( 
    'REGISTER_ID' 
);
// prep the bundle
$msg = array(
    'message'=> 'Pesan mantap',
    'title'=> 'Judulna',
    'subtitle'=> 'This is a subtitle. subtitle',
    'tickerText'=> 'Ticker text here...Ticker text here...Ticker text here',
    'vibrate'=>1,
    'sound'=>1,
    'largeIcon'=>'large_icon',
    'smallIcon'=>'small_icon'
);
$fields = array(
    'registration_ids'=>$registrationIds,
    'data'=>$msg
);

$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;
?>