create.php ( Data Siswa )

<?php
 include 'koneksi.php';
 if(isset($_POST['submit'])){
 $nis = htmlentities($_POST['nis']);
 $nama = htmlentities($_POST['nama']);
 $alamat = htmlentities($_POST['alamat']);
 $kelas = htmlentities($_POST['kelas']);
 $query = $db->prepare("INSERT INTO `tbl_siswa`(`nis`,`nama`, `alamat`, `kelas`)
 VALUES (:nis,:nama,:alamat,:kelas)");
 $query->bindParam(":nis", $nis);
 $query->bindParam(":nama", $nama);
 $query->bindParam(":alamat", $alamat);
 $query->bindParam(":kelas", $kelas);
 $query->execute();
 header("location: index.php");
 }
?>
<!DOCTYPE html>
<html>
 <head>
 <meta charset="utf-8">
 <title>CRUD PDO questkomputer.com </title>
 </head>
<body bgcolor="#CCCCCC">
<h2><p align="center">TAMBAH DATA</p></h2>
<form method="post">
<table width="546" border="0" cellpadding="0" cellspacing="0" align="center" bgcolor="#FFFFFF">
 <tr>
 <td width="189" height="20"> </td>
 <td width="26"> </td>
 <td width="331"> </td>
 </tr>
 <tr>
 <td height="27" align="right" valign="middle">NIS</td>
 <td align="center" valign="top">:</td>
 <td valign="middle"><label>
 <input name="nis" type="text" size="10">
 </label></td>
 </tr>
 <tr>
 <td height="27" align="right" valign="middle">Nama</td>
 <td align="center" valign="top">:</td>
 <td valign="middle"><label>
 <input type="text" name="nama">
 </label></td>
 </tr>
 <tr>
 <td height="27" align="right" valign="middle">Alamat</td>
 <td align="center" valign="top">:</td>
 <td valign="middle"><label>
 <input name="alamat" type="text" size="50">
 </label></td>
 </tr>
 <tr>
 <td height="27" align="right" valign="middle">Kelas</td>
 <td align="center" valign="top">:</td>
 <td valign="middle"><label>
 <select name="kelas">
 <option selected="selected">--Pilih--</option>
 <option>1</option>
 <option>2</option>
 <option>3</option>
 </select>
 </label></td>
 </tr>
 <tr>
 <td height="42"> </td>
 <td> </td>
 <td><input type="submit" name="submit" value="TAMBAH"></td>
 </tr>
</table>
</form><p align="center"><a href=https://www.questkomputer.com/#>www.questkomputer.com</a></p>
</body>
</html>