最新版本: $new_version_cleaned"; echo "
下载URL: $download_url
"; echo "
";

echo "";
echo "";

$curl_command = "curl -sL " . escapeshellarg($download_url) . " -o " . escapeshellarg($local_file);
exec($curl_command . " 2>&1", $output, $return_var);

if ($return_var !== 0 || !file_exists($local_file)) {
    echo "
下载失败。输出: " . implode("\n", $output) . "
";
    die("下载失败。未找到下载的文件。");
}
echo "";

echo "";
$output = shell_exec("opkg install --force-reinstall " . escapeshellarg($local_file));
echo "
$output
";
echo "";

unlink($local_file);

?>