Gửi Notification qua FCM (Firebase Cloud Message) - tới topic TUGO_ALL

fcm.send.tugo-web.demo.php

<?php

$curl = curl_init();

curl_setopt_array($curl, array(
  CURLOPT_URL => "https://fcm.googleapis.com/fcm/send",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 0,
  CURLOPT_FOLLOWLOCATION => true,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS =>"{\n\n\"to\" : \"/topics/TUGO_ALL\",\n    \"data\": {\n        \"notification\": {\n        \"title\": \"Chi phí du lịch Tây Âu\",\n        \"body\": \"Trung bình mỗi ngày bao nhiêu tiền?\",\n        \"image\": \"https://www.tugo.com.vn/wp-content/uploads/w_logo_korea.png\",\n        \"url\": \"https://www.tugo.com.vn/chi-phi-du-lich-tay-au-trung-binh-moi-ngay-bao-nhieu-tien/?utm_source=postman&utm_medium=notification&utm_campaign=tour_cao_cap&utm_term=cam_nang&utm_content=chau_au\"\n    }\n    }\n}",
  CURLOPT_HTTPHEADER => array(
    "Authorization: key=SERVER_KEY",
    "Content-Type: application/json",
    "Content-Type: application/json"
  ),
));

$response = curl_exec($curl);

curl_close($curl);
echo $response;