CI - Send Mail Using SMTP

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

class Mail_notif extends CI_Controller {

  public function __construct()
     {
         parent::__construct();
        date_default_timezone_set('Asia/Jakarta');
        $this->load->model('m_mail_notif', 'notif');
        $this->load->helper('url');

     }

  public function tombol_buka($nokey){

      $tgl_wkt = date('Y-m-d H:i:s');

       $data = array(
         'no_key'        => $nokey,
         'date'          => $tgl_wkt,
         'output_sensor' => 'buka'

       );

      if($this->db->insert('pintu_air', $data))
      {
         echo 'PINTU AIR SUKSES DIBUKA..';
      }

   }


  public function kirim($no_key)
    {

      $data_arr =  array();
      $query = $this->notif->get_mail($no_key);
      foreach ($query->result() as $row)
              {
                $data_arr['nam'] = $row->nama;
                $data_arr['ema'] = $row->email;
                $data_arr['out'] = $row->output_sensor;

              }


      //$url = 'http://192.168.1.5/petaniku/mail_notif/tombol-buka/1';
      $subjek = 'KETINGGIAN PERMUKAAN AIR PARIT';
      $pesan =  '<H3>Hai '.$data_arr['nam'].', Kondisi Air Sedang Tingi, Silahkan buka PINTU AIR !</H3>
                <div style="margin-top: 40px; margin-bottom:20px; font-size: 25px; color: red;">
                KETINGGIAN AIR = '.$data_arr['out'].' cm
                </div>
                <br/><br/>Silahkan buka aplikasi untuk menutupnya, atau bisa juga dengan menekan tombol BUKA dibawah.<br/><br/>

                <form action="https://ferrynurr.com/mail_notif/tombol_buka/1" method="get" enctype="multipart/form-data">
                  <button type="submit" form="form1" value="Submit">BUKA</button>
                </form>


                <br/><br/>
                Pesan dikirim dari alat, jangan di balas... Terimaksih..!';

      $config = Array(
        'protocol' => 'smtp',
        'smtp_host' => 'mail.ferrynurr.com',
        'smtp_port' => 465,
        'smtp_user' => 'petanibawang@ferrynurr.com', //isi dengan emailmu!
        'smtp_pass' => 'pasword_sensor_di_ya', //isi dengan password emailmu!
        'mailtype' => 'html',
        'charset' => 'utf-8',
        'newline' => '\r\n',
        'wordwrap' => TRUE
      );
      $this->load->library('email', $config);
     // $this->email->set_newline("\r\n");
      $this->email->from('petanibawang@ferrynurr.com', 'SMART AGRICULTURE BAWANG MERAH');
      $this->email->to($data_arr['ema']); //email tujuan. Isikan dengan emailmu!
      $this->email->subject($subjek);
      $this->email->message($pesan);
      if($this->email->send())
      {
        echo 'Email sent...';
      }
      else
      {
        show_error($this->email->print_debugger());
      }


    }


}