controller/regis.php

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

/**
 *
 */
class Regis extends CI_Controller
{
  public function __construct()
  {
      parent::__construct();
      $this->load->model('RegisModel');
      $this->load->library('upload');

  }
  public function index(){
    $this->load->view('home_view');
  }

  public function insertdata(){

    // proses upload gambar
    $config['upload_path'] = 'photo'; // folder upload
    $config['allowed_types'] = 'gif|jpg|jpeg|png'; // jenis file
    $config['max_size'] = '3000'; // besar file 3MB
    $config['max_width'] = '4480';
    $config['max_height'] = '4480';

    $this->load->library('upload', $config);
    if (! $this->upload->do_upload('foto')) // sesuaikan namanya dengan formnnya
    {
      $error = array('error' => $this->upload->display_errors());
      echo "gagal upload";
    }
    $file = $this->upload->data();
    $foto = $file['file_name'];

    // proses registrasi
    $data_member = array(
      'nama' =>$this->input->post('nama'),
      'email' =>$this->input->post('email'),
      'tlpn' =>$this->input->post('tlpn'),
      'foto' =>$foto
    );
    $this->RegisModel->simpan($data_member);
  }

}
?>