receiver.php

<?php
header("Content-Type: image/jpeg");


$curl = curl_init();
$id=$_GET['id']; //Id Message
curl_setopt_array($curl, array(
  CURLOPT_URL => "https://api.line.me/v2/bot/message/".$id."/content",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => array(
    "authorization: Bearer <Access Token Secret Disini>,
    "cache-control: no-cache",
    "postman-token: 32229dfc-7a5f-b01e-ccaa-482d2209e337"
  ),
));

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}