menu.php

<?php
$module = $_GET['module'];
?>
<li><a <?php if ($module == "") echo 'class="active"'; ?> href="./"><i class="fa fa-home"></i> <span>Beranda</span></a><li>
  <div class="container"></div>
  <?php
  if (isset($_SESSION['username']) && isset($_SESSION['password'])) {
      ?>
    <li><a <?php if ($module == "admin") echo 'class="active"'; ?> href="admin"><i class="fa fa-user"></i> <span>Admin</span></a><li>
      <div class="container"></div>	
    <li><a <?php if ($module == "penyakit") echo 'class="active"'; ?> href="penyakit"><i class="fa fa-bug"></i> <span>Penyakit</span></a><li>
      <div class="container"></div>	
    <li><a <?php if ($module == "gejala") echo 'class="active"'; ?> href="gejala"><i class="fa fa-eyedropper"></i> <span>Gejala</span></a><li>
      <div class="container"></div>
    <li><a <?php if ($module == "pengetahuan") echo 'class="active"'; ?> href="pengetahuan"><i class="fa fa-flask"></i> <span>Pengetahuan</span></a><li>
      <div class="container"></div>
    <li><a <?php if ($module == "post") echo 'class="active"'; ?> href="post"><i class="fa fa-file-text"></i> <span>Post Keterangan</span></a><li>
      <div class="container"></div>
    <li><a <?php if ($module == "password") echo 'class="active"'; ?> href="password"><i class="fa fa-edit"></i> <span>Ubah Password</span></a><li>
      <div class="container"></div>
      <?php
  }else {
      ?>
    <li><a <?php if ($module == "diagnosa") echo 'class="active"'; ?> href="diagnosa"><i class="fa fa-search-plus"></i> <span>Diagnosa</span></a><li>
      <div class="container"></div>
    <li><a <?php if ($module == "riwayat") echo 'class="active"'; ?> href="riwayat"><i class="fa fa-clock-o"></i> <span>Riwayat</span></a><li>
      <div class="container"></div>
    <li><a <?php if ($module == "keterangan") echo 'class="active"'; ?> href="keterangan"><i class="fa fa-commenting-o"></i> <span>Keterangan</span></a><li>
      <div class="container"></div>
    <li><a <?php if ($module == "harga") echo 'class="active"'; ?> href="harga"><i class="fa fa-bookmark-o"></i> <span>Info Harga</span></a><li>
      <div class="container"></div>
      <?php
  }
  ?>
<li><a <?php if ($module == "tentang") echo 'class="active"'; ?> href="tentang"><i class="fa fa-info-circle"></i> <span>Tentang</span></a><li>
  <div class="container"></div>