if (isset($_GET['file'])) {
    $file = base64_decode($_GET['file']);
    $download_file = unserialize($file);
    $fullPath = $download_file['filename'];
    $filename = $download_file['download_name'];
    $fileview = isset($download_file['view']) ? true : false;
    // Download process
    $extension = strtolower(pathinfo($fullPath, PATHINFO_EXTENSION));
    //  if (in_array($extension, array("pdf", "mp3", "mp4"))) {
    if (file_exists($fullPath)) {
        if ($fileview === false) {
            if ($fd = fopen($fullPath, "r")) {
                $fileSize = filesize($fullPath);

                switch ($extension) {
                    case "pdf": $contentType = "application/pdf";
                        break;
                    case "exe": $contentType = "application/octet-stream";
                        break;
                    case "zip": $contentType = "application/zip";
                        break;
                    case "doc": $contentType = "application/msword";
                        break;
                    case "xls": $contentType = "application/vnd.ms-excel";
                        break;
                    case "ppt": $contentType = "application/vnd.ms-powerpoint";
                        break;
                    case "gif": $contentType = "image/gif";
                        break;
                    case "png": $contentType = "image/png";
                        break;
                    case "jpeg":
                    case "jpg": $contentType = "image/jpg";
                        break;
                    default: $contentType = "application/force-download";
                        break;
                }

                header("Content-type: $contentType");
                header("Content-Disposition: attachment; filename=\"" . $filename . "\""); // use 'attachment' to force a download
                header("Content-length: $fileSize");
                header("Cache-control: private"); //use this to open files directly
                while (!feof($fd)) {
                    $buffer = fread($fd, $fileSize);
                    echo $buffer;
                }
            }
        } else {
            header("Content-type: application/pdf");
            // Send the file to the browser.
            readfile($fullPath);
        }
        fclose($fd);
        die;
    } else {
        header('location: ' . $_SERVER['HTTP_REFERER']);
        die();
    }
} else {
    header('location: ' . $_SERVER['HTTP_REFERER']);
    die();
}
/* } else {
  header('location: ' . $_SERVER['HTTP_REFERER']);
  die();
  } */
?>