Loading array of files from android to $ _FILES

I want to load multiple files from my Android code so that it is available in the $ _FILES array.

The server looks for files as an array. The PHP code on the server looks like

for ($i=0;$i<$NumFiles;$i++){
   ...
   $filename = $_FILES["fileset"]["name"][$i];
   $filetype = $_FILES["fileset"]["type"][$i];
   $file = curl_image_create($filePath,$filetype,$filename);
   ...
}

      

        
        
        
      

    

I have files uploaded to file [] (fileSet) for my android code

        HttpParams httpParams = new BasicHttpParams();
        HttpConnectionParams.setConnectionTimeout(httpParams, TIMEOUT_MILLISEC);
        HttpConnectionParams.setSoTimeout(httpParams, TIMEOUT_MILLISEC);
        HttpClient client = new DefaultHttpClient(httpParams);
        HttpPost request = new HttpPost(this.apiURL);
        MultipartEntityBuilder mpEntity = MultipartEntityBuilder.create();
        StringBody numFilesBody = new StringBody("" + fileSet.length, ContentType.TEXT_PLAIN);
        mpEntity.addPart("NumFiles", numFilesBody);
        for (int i = 0; i < fileSet.length; i++) {
            //What should I be doing here to get the $_FILES set up correctly
        }
        request.setEntity(mpEntity.build());
        HttpResponse response = client.execute(request);

      

        
        
        
      

    

I need to set up HTT PRequest so that the server can read the files in $ _Files as an array.