How can I send a Firebase Cloud Messaging notification without use the Firebase Console?

FCM cloud message notification send mobile device on simple method try this code

$ch = curl_init();

$registration_ids="YOUR DEVICE ID";

ignore_user_abort();

ob_start();

$url = 'https://fcm.googleapis.com/fcm/send';

$message = 'Name:"Vengadeshwaran" Contact number:"888XXXX-XXX"';

$fields = array(

'registration_ids' => array($registration_ids),

'priority' => 10,

'notification' => array('title' => 'Birthday', 'body' => $message ,'sound'=>'Default'),

);

$google_api_key = 'WEB API KEY';

$headers = array(

'Authorization:key='.$google_api_key,

'Content-Type: application/json'

);

curl_setopt($ch, CURLOPT_URL, $url);

curl_setopt($ch, CURLOPT_POST, true);

curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);

curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($fields));

$status = curl_exec($ch);

curl_close($ch);

echo $status;

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