header.php

<!-- Topbar -->
<nav class="navbar navbar-expand navbar-light bg-white topbar mb-4 static-top shadow">

<!-- Sidebar Toggle (Topbar) -->
<button id="sidebarToggleTop" class="btn btn-link d-md-none rounded-circle mr-3">
  <i class="fa fa-bars"></i>
</button>

<!-- Topbar Search -->
<!-- <form class="d-none d-sm-inline-block form-inline mr-auto ml-md-3 my-2 my-md-0 mw-100 navbar-search">
  <div class="input-group">
    <input type="text" class="form-control bg-light border-0 small" placeholder="Search for..." aria-label="Search" aria-describedby="basic-addon2">
    <div class="input-group-append">
      <button class="btn btn-primary" type="button">
        <i class="fas fa-search fa-sm"></i>
      </button>
    </div>
  </div>
</form> -->

<!-- Topbar Navbar -->
<ul class="navbar-nav ml-auto">

  <!-- Nav Item - Search Dropdown (Visible Only XS) -->
  <li class="nav-item dropdown no-arrow d-sm-none">
    <a class="nav-link dropdown-toggle" href="#" id="searchDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
      <i class="fas fa-search fa-fw"></i>
    </a>
    <!-- Dropdown - Messages -->
    <div class="dropdown-menu dropdown-menu-right p-3 shadow animated--grow-in" aria-labelledby="searchDropdown">
      <form class="form-inline mr-auto w-100 navbar-search">
        <div class="input-group">
          <input type="text" class="form-control bg-light border-0 small" placeholder="Search for..." aria-label="Search" aria-describedby="basic-addon2">
          <div class="input-group-append">
            <button class="btn btn-primary" type="button">
              <i class="fas fa-search fa-sm"></i>
            </button>
          </div>
        </div>
      </form>
    </div>
  </li>

  

  <div class="topbar-divider d-none d-sm-block"></div>

  <!-- Nav Item - User Information -->
  <li class="nav-item dropdown no-arrow">
    <a class="nav-link dropdown-toggle" href="#" id="userDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
      <span class="mr-2 d-none d-lg-inline text-gray-600 small"><?php echo $_SESSION['user321name'];?></span>
      <img class="img-profile rounded-circle" src="img/user.png">
    </a>
    <!-- Dropdown - User Information -->
    <div class="dropdown-menu dropdown-menu-right shadow animated--grow-in" aria-labelledby="userDropdown">
     
      <a class="dropdown-item" href="logout.php" data-toggle="modal" data-target="#logoutModal">
        <i class="fas fa-sign-out-alt fa-sm fa-fw mr-2 text-gray-400"></i>
        Logout
      </a>
    </div>
  </li>

</ul>

</nav>
<!-- End of Topbar -->




<!-- Logout Modal-->
<div class="modal fade" id="logoutModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
    <div class="modal-dialog" role="document">
      <div class="modal-content">
        <div class="modal-header">
          <h5 class="modal-title" id="exampleModalLabel">Ready to Leave?</h5>
          <button class="close" type="button" data-dismiss="modal" aria-label="Close">
            <span aria-hidden="true">×</span>
          </button>
        </div>
        <div class="modal-body">Select "Logout" below if you are ready to end your current session.</div>
        <div class="modal-footer">
          <button class="btn btn-secondary" type="button" data-dismiss="modal">Cancel</button>
          <a class="btn btn-primary" href="logout.php">Logout</a>
        </div>
      </div>
    </div>
  </div>