PHP download hidden file real address path method

Method 1, use the fread() function to slice and download, which is suitable for large-volume downloads. Speed ​​limit download is possible, but it is easy to cause memory overflow and download failure.

public function fileUrl($url)
{
    $file = 'uploads/files/'.$url;
    if (file_exists(\dirname(__FILE__).$file)) {
        return $this->error("文件不存在");
    }
    // 新文件名
    $filename = explode('.', $file);
    $filename = array_pop($filename);
    $filename = time().'.'.$filename;
    //下载文件
    $filesize = filesize($file) + 1000;
    header('Content-Description:File Transfer');
    header("Content-Type:application/octet-stream");
    header('Content-Transfer-Encoding:binary');
    header("Accept-Ranges: bytes");
    header('Expires:0');
    header('Cache-Control:must-revalidate');
    header('Pragma:public');
    header("Content-Length:".$filesize);
    header("Content-Disposition:attachment;filename=".$filename);
    $fp = fopen($file, "rb");
    fseek($fp,0);
    while (!feof($fp)) {
        set_time_limit(0);
        print (fread($fp, 1024 * 8));
        flush();
        ob_flush();
    }
    fclose($fp);
    exit ();
}

Method 2, downloading with no speed limit, no slicing, and no limit, is suitable for downloading small files.

public function fileUrl2($url)
{
    $file = 'uploads/files/'.$url;
    if (file_exists(\dirname(__FILE__).$file)) {
        return $this->error("文件不存在");
    }
    // 新文件名
    $filename = explode('.', $file);
    $filename = array_pop($filename);
    $filename = time().'.'.$filename;

    header('Content-type:application/octet-stream');
    header('Content-Disposition:attachment;filename='.$filename);
    header('Content-Length:'.filesize($file));
    readfile($file);
}