Pdf文件下载

Question

I have link to pdf file created like this

<?php echo '<a href="/test.com'. str_replace('\\', '/', $link).'" TITLE="download" ?>

Can i use this link in following script?

if ($file && is_file($file))
{
    header("Content-Type: application/octet-stream");
    header("Content-Disposition:$attach filename=\"".$filepath['basename']."\"");
    header("Content-Transfer-Encoding: binary");
    header("Content-Length: ".filesize($file));
    fpassthru(fopen($file, "r"));
}
else
{
    echo "File not find ($file)!";
}