我正在做一个网站，我会写我的网站模板不同的文章。我想要的形式后页

<form id="downloadForm" action="https://getintopc.software/wait-for-resource-to-download" method="post" target="_blank">
<input name="id" type="hidden" value="https://getintopc.s3.amazonaws.com">
<input name="filename" type="hidden" value="newsplus-news-and-magazine-wordpress-theme-2023-01-17-09-54-35-utc.zip">
<input name="filesize" type="hidden" value="15.5 MB">
<p></p>
<div align="center">
<button class="btn" title="Size: 15.5 MB">Download 64 Bit x64</button>
</div>
</form>

https://getintopc.software/wait-for-resource-to-download打开并文件下载此文件有php代码，但它不工作

<?php
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
if (isset($_POST['id']) && isset($_POST['filename'])) {
    $id = $_POST['id'];
    $filename = $_POST['filename'];
    $filesize = $_POST['filesize'];
    header('Content-Type: application/octet-stream');
    header('Content-Disposition: attachment; filename="' . $filename . '"');
    header('Content-Length: ' . $filesize);
    readfile($id . '/' . $filename);
    exit;
} else {
    echo "Invalid form data.";
}

{\fnSimHei\bord1\shad1\pos（200，288）}