example code for upload image to db

code_upload-ci3-model

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

class Registrasi extends CI_Controller {

    public function __construct()
    {
        parent::__construct();
        $this->load->model('Model_data', 'Data');
    }

    public function index()
	{
		$data['web_ppdb'] = $this->db->get_where('tbl_web', "id_web='1'")->row();
		if ($data['web_ppdb']->status_ppdb == 'tutup') {
			redirect('404');
        }
        // $this->form_validation->set_rules('nama_lengkap', 'Nama Lengkap', 'trim|required|min_length[4]');
        // $this->form_validation->set_rules('sekolah_asal', 'Sekolah Asal', 'trim|required|min_length[6]');
        // $this->form_validation->set_rules('ortu', 'Orangtua', 'trim|required|min_length[4]');
        // $this->form_validation->set_rules('wa_ortu', 'No. WA Orangtua', 'trim|numeric|min_length[11]');
        // if ($this->form_validation->run() == false) {
        //     $this->load->view('web/index', $data);
        // } else {
        //     $this->prereg();
        // }
        $this->load->view('web/index', $data);
        if (isset($_POST['regNew'])) {
            $this->prereg();
        }
    }

    function register()
    {
        $nama = $this->input->post('nama_lengkap');
        $asal = $this->input->post('sekolah_asal');
        $ortu = $this->input->post('ortu');
        $nowa = $this->input->post('wa_ortu');
        // $tf   = $_FILES['bukti_tf']['name'];
        $dummy = array(
            'nama' => $nama,
            'asal_sekolah' => $asal,
            'ortu' => $ortu,
            'wa_ortu' => $nowa,
        );
        $config['upload_path']    = './uploads/tf/';
        $config['allowed_types']  = 'jpeg|jpg|png';
        $config['max_size']       = 2048; // 2 MB
        $config['file_name']      = 'tf-'.date('ymd');
        // $this->load->library('upload', $config);
        $this->upload->initialize($config);

        if (!empty($_FILES['bukti_tf']['name'])) {
            if ($this->upload->do_upload('bukti_tf')) {
                $data = $this->upload->data();
                $dummy['bukti_tf'] = $data['file_name'];
                $this->db->insert('tb_pd', $dummy);
                $this->session->set_flashdata('msg', '<div class="alert alert-success alert-dismissible" role="alert"><button type="button" class="close" data-dismiss="alert" aria-hidden="true">&times;</button>Berhasil Mendaftar!</div>');
            } else {
                $this->session->set_flashdata('msg', '<div class="alert alert-success alert-dismissible" role="alert"><button type="button" class="close" data-dismiss="alert" aria-hidden="true">&times;</button>'.$this->upload->display_errors().'</div>');
            }
        }
    }
}