tulung CI kang...

dashboard.php(controller)
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Dashboard extends CI_Controller {

    function Dashboard()
    {
        parent::__construct();

        if(!$this->session->userdata('logged'))
            redirect('login');
    }

    public function index()
    {
        //$this->load->model('upload_model');
        $data['page_title']  = "Dashboard";

        // Load View
        $this->template->show('dashboard', $data);

        /*if($this->input->post('upload')){
            $this->upload_model->do_upload();
        }*/
        //$this->load->view('upload_form');
    }

    public function doUpload(){
        $config = array(
            'upload_path' => 'member/',
            'allowed_types'=> 'png|jpg|jpeg',
            'max_size'=> '1000',
            'max_width'=> '1920',
            'max_height'=> '1200'
        );

        $this->load->library('upload', $config);
        if(!$this->upload->do_upload()){
            $error = array('error' => $this->upload->display_errors());

        }else{
            $finfo = $this->upload->data();
            echo '<pre>';
            //dapatkan info file
            print_r($finfo);
            echo '<pre>';
            $this->_createThumbnail($finfo['file_name']);

            $data['uploadInfo'] = $finfo;
            $data['thumbnail_name'] = $finfo['raw_name'] . '_thumb' . $finfo['file_ext'];

            $this->load->view('upload_success',$data);
            $this->load->view('dashboard',$data);
        }

    }

    function _createThumbnail($filename){
        $config = array(
            'image_library' => 'gd2',
            'source_image' => 'member/' . $filename,
            'new_image' => 'member/profile',
            'create_thumb' => 'true',
            'maintain_ratio' => 'true',
            'width' => 150,
            'height' => 175
        );
        $this->load->library('image_lib',$config);
        if(!$this->image_lib->resize())
            echo $this->image_lib->display_errors();

    }


}

dashboard.php(view)
<?php
// Load Menu
$this->template->menu('dashboard');
?>

<div id="container">

    <div class="upload">
        <?php echo form_open_multipart('index.php/dashboard/doUpload');//call controller
            echo form_upload('userfile');
            echo form_submit('upload','Upload Image');
            echo form_close();
        ?>
    </div>

    <div id="image">
        <img alt="your profile image" src="<?php echo base_url() . '/member/profile/' . $thumbnail_name;?>"/>
    </div>


</div>