<?php
 include 'lib/library.php';

 if($_SERVER['REQUEST_METHOD'] == 'POST'){
 $nis = $_POST['nis'];
 $nama_lengkap = $_POST['nama_lengkap'];
 $jenis_kelamin = $_POST['jenis_kelamin'];
 $kelas = $_POST['kelas'];
 $jurusan = $_POST['jurusan'];
 $alamat = $_POST['alamat'];
 $golongan_darah = $_POST['goldar'];
 $nama_ibu = $_POST['namaibu'];
 $file = $_POST['foto']; //Ambil nama file dari type hidden, jika user tidak mengubah fotonya


 $foto = $_FILES['foto']; //Script ini copy dari script tambah.php tadi karena masih dibutuhkan fungsi yang sama

 if(!empty($foto) AND $foto['error'] == 0){
  $path = './media/images/';
  $upload = move_uploaded_file($foto['tmp_name'], $path . $foto['name']);

  if (!$upload) {
   flash('error', "Upload File Gagal");
   header('Location: index.php');
  }
  $file = $foto['name'];
 }

 $sql = "UPDATE siswa2 SET nis = '$nis',
     nama_lengkap = '$nama_lengkap',
     jenis_kelamin = '$jenis_kelamin',
     kelas = '$kelas',
     jurusan = '$jurusan',
     alamat = '$alamat',
     golongan_darah = '$golongan_darah',
     nama_ibu_kandung = '$nama_ibu',
     file = '$file'
     WHERE nis = '$nis' ";
           //jangan lupa tambahkan query nya
 $mysqli->query($sql)or die($mysqli->error);

 header('Location: index.php');
 }

 $nis = $_GET['nis'];

 if(empty($nis)) header('Location: index.php');

 $sql = "SELECT * FROM siswa2 WHERE nis = '$nis' ";
 $query = $mysqli->query($sql);
 $siswa = $query->fetch_array();

 if (empty($siswa)) header('Location: index.php');

 include 'views/v_tambah.php';
 ?>