CI3: Multiple File Upload

Hi Guys,

Basing from http://www.codeigniter.com/userguide3/li...ading.html I'm trying to implement method ('process_upload'), that would upload multiple files. the idea is basically from the tutorial, only i added some loop just in case of multiple input.

PHP Code:

public function process_upload( $input_field_name, $config = array() ) {
  for ($key = 0; $key < count($_FILES[$input_field_name]['name']); $key++) {
    $_FILES[$input_field_name]['name']     = $_FILES[$input_field_name]['name'][$key];
    $_FILES[$input_field_name]['type']     = $_FILES[$input_field_name]['type'][$key];
    $_FILES[$input_field_name]['tmp_name'] = $_FILES[$input_field_name]['tmp_name'][$key];
    $_FILES[$input_field_name]['error']    = $_FILES[$input_field_name]['error'][$key];
    $_FILES[$input_field_name]['size']     = $_FILES[$input_field_name]['size'][$key];

    $this->load->library('upload', $config);

    if ( !$this->upload->do_upload($input_field_name) ) {
      return array('upload_error' => $this->upload->display_errors());
    } else {
      return array('upload_data' => $this->upload->data());
    }    
  }  
} 


Then call the method ('process_upload') in other method ('set_upload') like:

PHP Code:

public function set_upload() {
  // Config your upload settings
  $config['upload_path']      = './public/images/';
  $config['allowed_types']    = 'gif|jpg|png';
  $config['max_size']         = '100';
  $config['max_width']        = '1024';
  $config['max_height']       = '768';

  $field = 'myfile'; // Input File field
  $data = $this->process_upload($field, $config);
} 


Now, if i try to upload 3 files, only 1 file is uploaded  to its upload path directory. Cany anyone please help, how can i resolved this issue.

Thanks, in advanced.