Mahalaman Administrator setelah berhasil login. pada halaman ini memiliki modul untuk mengecek apakah session terdaftar atau tidak, jika session tikda tedatar maka redirect ke halaman login atau index.php. dan jika diarah kan ke halaman index.php dengan mengetikkan http://localhost/demo/index.php maka akan redirect ke halaman admin, karena session masih ad.

File : cek_session.php

<?php
//cek session, jika tidak ada kembalikan ke halaman login
session_start();
if(!isset($_SESSION['user_sesion'])){
  header('location: index.php');
}
?>

Halaman Data mahasiswa,

File : data_mahasiswa.php

<?php
include 'config/koneksi.php';
include 'config/cek_session.php';
?>
<title>Data Mahasiswa</title>
<link rel="stylesheet" type="text/css" href="bootstrap3/css/bootstrap.css">
<link rel="stylesheet" type="text/css" href="bootstrap3/css/bootstrap-theme.css">
<div class="container">
  <h4>Welcome Administrator :
    <span class="label label-success"><?php echo $_SESSION['user_sesion']; ?></span> | <label ><a href="logout.php">logout</a></label>
  </h4>
  <h3>DATA MAHASISWA</h3>
  <hr />
  <p>
    <a href="form_tambah_upload.php" class="btn btn-primary">Tambah (upload)</a> |
    <a href="form_tambah_blob.php" class="btn btn-info">Tambah (blob)</a>
  </p>
  <table class="table table-bordered table-striped" width="90%">
    <tr>
      <th>No</th>
      <th>NPM</th>
      <th>Nama Mahasiswa</th>
      <th>Jenis Kelamin</th>
      <th>Prodi</th>
      <th>Foto 1</th>
      <th>Foto 2</th>
      <th>Aksi</th>
    </tr>
    <?php
    $sql = "SELECT * FROM mahasiswa, prodi WHERE mhs_prodi_id = prodi_id";
    $query = mysqli_query($koneksi, $sql);
    if (!$query) { die('Query Gagal : '. mysqli_error($conn));}
    if (mysqli_num_rows($query) > 0){
      $no=1;
      while ($row = mysqli_fetch_array($query)) {
        ?>
        <tr>
          <td><?php echo $no++; ?></td>
          <td><?php echo $row ['mhs_npm']; ?></td>
          <td><?php echo $row ['mhs_nama']; ?></td>
          <td><?php echo $jk = ($row ['mhs_jk'] == 'LK') ? "Laki-laki" : "Perempuan";?></td>
          <td><?php echo $row ['prodi_nama']; ?></td>
          <td>
            <img src="images/<?php echo $row["kat_foto"]; ?>" width="90" height="90">
          </td>
          <td>
            <img src="view_foto.php?id_kat=<?php echo $row ['kat_id'];?>" width="80" height="90">
          </td>
          <td>
            <a href="detail.php?id=<?php echo $row ['mhs_id'];?>" class="btn btn-info">Detail</a>
            <a href="edit.php?id=<?php echo $row ['mhs_id'];?>" class="btn btn-info">EDIT</a>
            <a href="delete.php?id=<?php echo $row ['mhs_id'];?>" class="btn btn-danger">DELETE</a>
          </td>
        </tr>
        <?php
      }
    }else{
      ?>
      <tr>
        <td colspan="8"> <center><i>Belum Ada Data !</i></center></td>
      </tr>
    <?php } ?>
  </table>
</div>