Multiple File Upload in CodeIgniter 3

if($images['name'][$i] != ''){
    $name = explode('.', $images['name'][$i]);
    $filename = time().rand(1000,9999).'.'.end($name);

    $config = array(
              'upload_path'     => "assets/uploaded/property/",
              'upload_url'      => base_url()."assets/uploaded/property/",
              'allowed_types'   => 'jpeg|jpg|png',
              'max_size'        => '1024',
              'file_name'       => $filename,
              'overwrite'       => FALSE
            );

    $_FILES['image']['name'] = $_FILES['images']['name'][$i];
    $_FILES['image']['type'] = $_FILES['images']['type'][$i];
    $_FILES['image']['tmp_name'] = $_FILES['images']['tmp_name'][$i];
    $_FILES['image']['error'] = $_FILES['images']['error'][$i];
    $_FILES['image']['size'] = $_FILES['images']['size'][$i];

    $this->upload->initialize($config);
    if(!$this->upload->do_upload('image'))
    {
        echo $this->upload->display_errors();
        $data['type'] = 'Error';
        $data['message'] = 'Uploaded file is not a valid image. Only JPG, JPEG and PNG files are allowed.';
        echo json_encode($data);
        exit;
    }else{
        $this->upload->data();
    }
}