Nilai Siswa

<html>
<head>
<title>Nilai Siswa</title>
<link rel="stylesheet" type="text/css" href="style.css" media="screen" />
</head>
<body>
<?php
include ('admin_header.php');
include ('menu_nilai.php');
?>
<font color="000">
<div align="left">
<h3>Nilai Siswa - Masukkan Nilai Tengah Semester</h3></div>
<hr size=1 width=100% align="left">
</font>
<div align="left">
<?php
include('menu_masukan_nilai.php');
?>
</div>
<div align="left">
<?php
require "koneksi.php";
include "config.php";
require_once 'biff-reader-2010-10-07/CompoundDocument.inc.php';
require_once 'biff-reader-2010-10-07/BiffWorkbook.inc.php';
$fileName = $_POST['usefile'];
if (!is_readable ($fileName)) die ('Cannot read ' . $fileName);
$doc = new CompoundDocument ('utf-8');
$doc->parse (file_get_contents ($fileName));
$wb = new BiffWorkbook ($doc);
$wb->parse ();
$s='';
foreach ($wb->sheets as $sheetName => $sheet)
{
echo '<table cellspacing = "0">';
  for ($row = 0; $row < $sheet->rows (); $row ++)
  {
    echo '<tr>';
    $teks='';
    for ($col = 1; $col < $sheet->cols (); $col ++)
    {
      $cell = (!isset ($sheet->cells [$row][$col])?$sheet->cells [$row][$col]:NULL);
      $teks.=($col==1?'':',').(isset($cell)?"'".$cell->value."'":"''");
      echo (isset($cell)?'<td style = "'.$cell->style->css ().'" rowspan = "'
                .$cell->rowspan.'" colspan = "'.$cell->colspan .'">':'<td>';
      echo (isset($cell->value) && !empty($cell->value)? $cell->value:'&nbsp;');
      echo '</td>';
    }
    $query = "INSERT INTO nilai (no_induk, nama, kode_mapel, ulangan_mid, semester, kelas) VALUES ($teks)";
    $s.=$query."<br>";
    $hasil = mysql_query($query);
  }
  echo '</table>';
}
?>
</div>
<?php
include ('bawah.php');
echo $s;
?>
</body>
</html>