从php解压缩file_get_contents创建文件

<?php

// // $bin = pack("S", 65535);
// // $ray = unpack("S", $bin);
// $ray = pack("H*hex", $data);
// print_r($ray);die();
// echo "UNSIGNED SHORT VAL = ", $ray[1], "
";


$file = file_get_contents("C:\\Users\\qwerty\Downloads\\image001.jpg", true);
// $file = file_get_contents("C:\\Users\\qwerty\\Downloads\equest.pdf", true);
$data = '0x'.unpack('H*hex', $file)['hex'];

header('Content-Description: File Transfer');
header("Content-Transfer-Encoding: Binary");
// header('Content-Disposition: attachment; filename="request.pdf');
header('Content-Disposition: attachment; filename="image001.jpg');
header('Cache-Control: must-revalidate');
header('Content-Length: 80685');
echo $data;
?>

I want am trying to create File from unpacking the same file. I am recreating this from my other function that unpacks a file stores the data in database and recreate the file again using the data. The above is my sample demo for the bigger function. What it does is unpack file content then echo again. Problem is the downloaded file (image or pdf) cant be opened. Any idea is appreciated

I think I saw the problem when I opened the file in notepad it has a newline before the image data how can I make sure there will be no new line in before the data?