download remote file with resumable capability

i need to scrip to download remote file with resumable capability . i write this code but notworking true. 

PHP Code:

$CI =& get_instance();
$CI->load->helper('func');
$CI->load->helper('download');
if($fileData !== false){
    $timeexpire = $fileData['time'];
    $now = time();
    $file = '';
    if($timeexpire < $now){
        redirect('download/time/2');
    }else{
        $url              = str_replace(" ","%20",$fileData['url']);
        $fileinfo = pathinfo($url);
        $mimType= ($fileinfo['extension'] == 'mp3') ? 'audio/mpeg' : 'txt';//set mime type to mp3
        $fileSize = curl_get_file_size($url);//get file size with curl
        $foundCode = existfile($url);//check exists file or not and return 400 or 200          
        if($foundCode == 200){
           $handel        = @fopen($url,'r');
        }else{
             redirect(base_url().'track/faild'); 
        }                
        $begin    = 1;
        $end      = $fileSize ;
        $fileName = basename($url);
        if (isset($_SERVER['HTTP_RANGE'])){
            if (preg_match('/bytes=\h*(\d+)-(\d*)[\D.*]?/i', $_SERVER['HTTP_RANGE'], $matches))
            {
                $begin  = intval($matches[1]);
                if (!empty($matches[2]))
                {
                  $end  = intval($matches[2]);
                }
            }
        }
        if (isset($_SERVER['HTTP_RANGE']))
        {
          header('HTTP/1.1 206 Partial Content');
        }
        else
        {
         header('HTTP/1.1 200 OK');
        }
        header('Pragma: public');     // required
        header('Accept-Ranges: bytes'); 
        header("Content-Type: $mimType");        
        header("Content-Disposition: attachment; filename=$fileName");
        header('Cache-Control: private');        
        header("Content-Range: bytes $begin-$end/$fileSize");
        header('Content-Length:' . $fileSize);        
        $cur  = $begin;
        fseek($handel,$cur,0);
        if($handel != NULL){                        
            while(!feof($handel))
            {                             
                print fread($handel, 1024);
                //$cur += 1024*16;
            }
        }else{
            redirect(base_url()."track/faild");
        }
    }            
}