s8ZhVzzZ

1public static function sendNotification($gcm_id_arr = array(),$title,$data,$user)
2    {
3        //API URL of FCM
4        $url = 'https://fcm.googleapis.com/fcm/send';
5
6        $notification = array(
7            'title' => $title,
8            'body' => $data['message']
9        );
10
11        if(isset($data['picture_url'])){
12            $notification['image'] = $data['picture_url'];
13            $notification['main_picture'] = $data['picture_url'];
14            $data['image'] = $data['picture_url'];
15            $data['main_picture'] = $data['picture_url'];
16        }
17
18        /*api_key available in:
19        Firebase Console -> Project Settings -> CLOUD MESSAGING -> Server key*/
20        $api_key = 'API__KEy__HERE';
21        $fields = array (
22            'registration_ids' => $gcm_id_arr,
23            'data' => $data,
24            'notification' => $notification
25        );
26
27        //header includes Content type and api key
28        $headers = array(
29            'Content-Type:application/json',
30            'Authorization:key='.$api_key
31        );
32
33        $ch = curl_init();
34        curl_setopt($ch, CURLOPT_URL, $url);
35        curl_setopt($ch, CURLOPT_POST, true);
36        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
37        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
38        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
39        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
40        curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($fields));
41        $result = curl_exec($ch);
42        if ($result === FALSE) {
43            die('FCM Send Error: ' . curl_error($ch));
44        }
45        curl_close($ch);
46        return $result;
47    }