pdf 모바일에서 다운로드시 에러나는경우

/bbs/download.php

//84~97번 까지 주석 후 코드 추가 (헤더 주석처리)


// Must be fresh start
if( headers_sent() )
    die('Headers Already Sent');
   
    // Required for some browsers
    if(ini_get('zlib.output_compression'))
        ini_set('zlib.output_compression', 'Off');
       
        // Parse Info / Get Extension
        $fsize = filesize($filepath);
        $path_parts = pathinfo($filepath);
        $ext = strtolower($path_parts["extension"]);
       
        // Determine Content Type
        switch ($ext)
        {
            case "pdf": $ctype="application/pdf"; break;
            case "exe": $ctype="application/octet-stream"; break;
            case "zip": $ctype="application/zip"; break;
            case "doc": $ctype="application/msword"; break;
            case "xls": $ctype="application/vnd.ms-excel"; break;
            case "ppt": $ctype="application/vnd.ms-powerpoint"; break;
            case "gif": $ctype="image/gif"; break;
            case "png": $ctype="image/png"; break;
            case "jpeg":
            case "jpg": $ctype="image/jpg"; break;
            default: $ctype="application/force-download";
        }
       
        header("Pragma: public"); // required
        header("Expires: 0");
        header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
        header("Cache-Control: private",false); // required for certain browsers
        header("Content-Type: $ctype");
        header("Content-Disposition: attachment; filename=\"".$original."\";" );
        header("Content-Transfer-Encoding: binary");
        header("Content-Length: ".$fsize);
        ob_clean();
        flush();