Untitled

<?php
session_start();
include "inc/koneksi.php";

if(@$_SESSION['admin'] || @$_SESSION['operator']) {
    header("location: index.php");
} else {
?>

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
    <title>NF Jati Mekar</title>

    <!-- Bootstrap -->
    <link href="css/bootstrap.min.css" rel="stylesheet">
    <script src="js/bootstrap.min.js"></script>
    <script src="https://ajax.googleapis.com/ajax/li/jquery/1.11.3/jquery.min.js"></script>
    <script type="text/javascript" src="jquery.validate.js"></script>
    <script type="text/javascript">
        $('form').validate({
      rules: {
        firstname: {
          minlength: 1,
          maxlength: 15,
          required: true
        },
        lastname: {
          minlength: 1,
          maxlength: 10,
          required: true
        }
      },
      highlight: function(element) {
        $(element).closest('.form-group').addClass('has-error');
      },
      unhighlight: function(element) {
        $(element).closest('.form-group').removeClass('has-error');
      },
      errorElement: 'span',
      errorClass: 'help-block',
      errorPlacement: function(error, element) {
        if (element.parent('.input-group').length) {
          error.insertAfter(element.parent());
        } else {
          error.insertAfter(element);
        }
      }
    });
    </script>
    <!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
    <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
    <!--[if lt IE 9]>
      <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
      <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
    <![endif]-->
  <style type="text/css">
  body{
    background-color: #eee;
  }
  </style>
  </head>
  <body>

  <div class="container">
      <p><br/></p>
      <div class="row">
          <div class="col-xs-6 col-sm-4"></div>
          <div class="col-xs-6 col-sm-4"></div>
          <div class="clearfix visible-xs-block"></div>
          <div class="col-xs-6 col-sm-4">
              <div class="panel panel-info">
                 <div class="panel-body">
                      <div class="page-header">
                            <h3><p class="text-center">Login Area</p></h3>
                      </div>
                      <form role="form" action="" method="POST">
                          <div class="form-group">
                              <label class="control-label" for="firstname">Username</label>
                              <div class="input-group">
                                  <span class="input-group-addon"><span class="glyphicon glyphicon-user"></span></span>
                                  <input type="text" name="firstname" class="form-control" placeholder="username" />
                              </div>
                          </div>
                          <div class="form-group">
                              <label class="control-label" for="lastname">Password</label>
                              <div class="input-group">
                                  <span class="input-group-addon"><span class="glyphicon glyphicon-lock"></span></span>
                                  <input type="text" name="lastname" class="form-control" id="exampleInputPassword1" placeholder="Password" />
                              </div>
                          </div>
                          <hr/>
                          <button type="button" class="btn btn-success"><span class="glyphicon glyphicon-plus"></span> Daftar</button>
                          <button type="submit" name="login" value="Login" class="btn btn-primary"><span class="glyphicon glyphicon-log-in"></span> Login</button>
                          <p><br/></p>
                      </form>
                      <?php
                      $firstname = @$_POST['firstname'];
                      $lastname = @$_POST['lastname'];
                      $login = @$_POST['login'];

                      if($login)  {
                          if($firstname == "") {
                              echo "Username tidak boleh Kosong";
                          } else if($lastname == "") {
                              echo "Password tidak boleh kosong";
                          } else {
                              $sql = mysql_query("select * from tb_login where username = '$user' and password = md5('$pass')") or die (mysql_error());
                              $data = mysql_fetch_array($sql);
                              $cek = mysql_num_rows($sql);
                              if($cek >= 1) {
                                  if($data['level'] == "admin") {
                                      @$_SESSION['admin'] = $data['kode_user'];
                                      header("location: index.php");
                                  } else if($data['level'] == "operator") {
                                      @$_SESSION['operator'] = $data['kode_user'];
                                      header("location: index.php");
                                  }
                              } else {
                                 echo "login gagal";
                              }
                          }
                      }
                      ?>
                  </div>
              </div>
          </div>
      </div>
  </div>

    <!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
    <!-- Include all compiled plugins (below), or include individual files as needed -->
  </body>
</html>

<?php
}
?>