Firebase Cloud Messaging Curl Wrapper

CloudMessaging.php

<?php

namespace Firebase;

class CloudMessaging
{
    public static $authKey = '';
    
    public static function sendMessage($title, $body, $to, $data = [], $priority = 'high')
    {
        $fields = [
            'notification' => [
                'title' => $title,
                'body' => $body,
                'sound' => 'default',
                'click_action' => 'FCM_PLUGIN_ACTIVITY',
                'icon' => 'fcm_push_icon' 
            ],
            'to' => $to,
            'priority' => $priority
        ];
        
        if ($data) {
            $fields['data'] = $data;
        }

        $fields = json_encode($fields);

        $ch = curl_init('https://fcm.googleapis.com/fcm/send');
        curl_setopt($ch, CURLOPT_HEADER, false);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_TIMEOUT, 60);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($ch, CURLOPT_HTTPHEADER, array(
            'Content-Type: application/json',
            'Authorization:key=' . static::$authKey
        ));
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $fields);
        $result = curl_exec($ch);
        
        return $result;
    }
}