Import Excel

function do_upload()
{
    $config['upload_path'] = './temp_upload/';
    $config['allowed_types'] = 'xls';

    $this->load->library('upload', $config);

    if ( ! $this->upload->do_upload())
    {
        $data = array('error' => $this->upload->display_errors());
    }
    else
    {

    $data = array('error' => false);
    $upload_data = $this->upload->data();

        $this->load->library('excel_reader');
    $this->excel_reader->setOutputEncoding('CP1251');

    $file =  $upload_data['full_path'];
    $this->excel_reader->read($file);
    error_reporting(E_ALL ^ E_NOTICE);

    // Sheet 1
    $data = $this->excel_reader->sheets[0] ;

        $dataexcel = Array();
    for ($i = 1; $i <= $data['numRows']; $i++) {
        if ($data['cells'][$i][1] == '') break;
        // Variabel Data NIM
        $alumni_nim = $data['cells'][$i][1];
        // Pengecekan jika ada NIM sama
        $cek_data = $this->import_model->cek_data($alumni_nim)->result();
        $jml_data = count($cek_data);

        if ($jml_data == 0) {
            $dataexcel[$i-1]['alumni_nim'] = $data['cells'][$i][1];
                    $dataexcel[$i-1]['alumni_nama'] = $data['cells'][$i][2];
                    $dataexcel[$i-1]['fakultas_id'] = $data['cells'][$i][3];
                    $dataexcel[$i-1]['progdi_id'] = $data['cells'][$i][4];
                    $dataexcel[$i-1]['alumni_tmpt_lhr'] = $data['cells'][$i][5];
                    $dataexcel[$i-1]['alumni_tgl_lhr'] = $data['cells'][$i][6];
                    $dataexcel[$i-1]['alumni_hp'] = $data['cells'][$i][7];
                    $dataexcel[$i-1]['alumni_agama'] = $data['cells'][$i][8];
                    $dataexcel[$i-1]['alumni_tgl_masuk'] = $data['cells'][$i][9];
                    $dataexcel[$i-1]['alumni_tgl_lulus'] = $data['cells'][$i][10];
                }
                else
                {
                    echo 'NIM sudah Ada.';
                }
    }
    delete_files($upload_data['file_path']);
        $this->import_model->tambahdataalumni($dataexcel);
        $data['alumni'] = $this->import_model->getuser();
    }
$this->template->display('panel/hasil_import_v', $data);
}