이어받습니다

download.php

<?php
function mimeTypeOf($path)
{
    $finfo = new finfo(FILEINFO_MIME_TYPE);
    return $finfo->file($path);
}
function download($path, $name = '', $mimeType = '', $expires = 0, $streaming = false)
{
    // http://w-shadow.com/blog/2007/08/12/how-to-force-file-download-with-php/
    set_time_limit(0);
    ini_set('zlib.output_compression', 'Off');

    $fp = @fopen($path, 'rb');
    if ($fp === false)
    {
        echo '* File not found or inaccessible!';
        exit;
    }

    @ob_end_clean();

    if ($expires > 0)
    {
        header('Expires: ' . gmdate('D, d M Y H:i:s', time() + $expires) . ' GMT');
        header('Cache-Control: max-age=' . $expires);
    }
    else
    {
        header('Pragma: no-cache');
        header('Expires: Thu, 01 Jan 1970 00:00:00 GMT');
        header('Cache-control: no-store');
    }

    // https://tools.ietf.org/html/rfc6266
    $name = empty($name) ? basename($path) : $name;
    header('Content-Type: ' . (empty($mimeType) ? mimeTypeOf($path) : $mimeType));
    header('Content-Disposition: ' . ($streaming ? 'inline' : 'attachment') . '; ' .
        'filename="' . rawurlencode($name) . '"; ' .
        'filename*=UTF-8\'\'' . rawurlencode($name));

    // https://tools.ietf.org/html/rfc7233
    $size = fstat($fp)['size'];
    header('Accept-Ranges: bytes');
    if (isset($_SERVER['HTTP_RANGE']))
    {
        list($rangeUnit, $ranges) = explode('=', $_SERVER['HTTP_RANGE'], 2);
        if ($rangeUnit == 'bytes')
        {
            list($range, $extra_ranges) = explode(',', $ranges, 2);
        }
        else
        {
            $range = '';
        }
        list($start, $end) = explode('-', $range);

        if (empty($start) && !empty($end))
        {
            $start = intval($end) ? max($size - intval($end), 0) : 0;
            $end = $size - 1;
        }
        else
        {
            $end = empty($end) ? $size - 1 : min(intval($end), $size - 1);
            $start = empty($start) || intval($start) > $end ? 0 : intval($start);
        }

        // header('HTTP/1.1 206 Partial Content');
        http_response_code(206);
        header('Content-Range: bytes ' . $start . '-' . $end . '/' . $size);

        $size = $end - $start + 1;
        fseek($fp, $start);
    }
    header('Content-Length: ' . $size);
    flush();

    $send = 0;
    while (!connection_aborted() && !feof($fp) && $send < $size)
    {
        $buffer = fread($fp, min($size - $send, 1024 * 1024 * 4));
        echo $buffer;
        flush();
        $send += strlen($buffer);
    }

    fclose($fp);
}
?>