Online PHP editor | output for 9IbsZ

<?php $serverApiKey = "AIzaSyBFtNb7a_TCtxSqkiWUc5qGKVJ1KJtIa0s"; $reg_id = "fwrBnLTNyCg:APA91bGmHvhFWgXPJcXi7Lh5T1iBZ80u8KaXdhiNmoRTrk0nvCDDm-2dBd6esuCaG4hU33dU1oqU0jYQYvdRFm3alflhyXl7dhGyGb7PaFHbuU3FaSbsYfJagfe6NdLZDRElDU5cZoYc"; define("GOOGLE_API_KEY", "AIzaSyBFtNb7a_TCtxSqkiWUc5qGKVJ1KJtIa0s"); define("GOOGLE_GCM_URL", "https://android.googleapis.com/gcm/send"); function send_gcm_notify($reg_id, $message) { $fields = array( 'registration_ids' => array( $reg_id ), 'data' => array( "title" => "yolo", "message" => $message ), ); $headers = array( 'Authorization: key=' . GOOGLE_API_KEY, 'Content-Type: application/json' ); $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, GOOGLE_GCM_URL); 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); if ($result === FALSE) { die('Problem occurred: ' . curl_error($ch)); } curl_close($ch); echo $result; } $msg = "Google Cloud Messaging working well"; send_gcm_notify($reg_id, $msg);