Cara kirim pesan gambar atau file via API whacenter dengan menggunakan PHP

asas

<?php

$url = 'https://app.whacenter.com/api/send';

$ch = curl_init($url);

$nohp= '085640206067';
$pesan= 'halo bos';
$file = 'https://i.ibb.co/S5GYRNL/bird-thumbnail.jpg';

$data = array(
    'device_id' => '3b767fb9327e640a7d7cd9f7b7b9d294',
    'number' => $nohp,
    'message' => $pesan,
    'file' => $file,
   
);
$payload = $data;
curl_setopt($ch, CURLOPT_POSTFIELDS, $payload);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$result = curl_exec($ch);
curl_close($ch);
echo $result;
?>