<?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['golongan_darah'];
        $nama_ibu_kandung = $_POST['nama_ibu_kandung'];

        $sql = "UPDATE siswa SET nis = '$nis',
                        nama_lengkap = '$nama_lengkap',
                        jenis_kelamin = '$jenis_kelamin',
                        kelas = '$kelas',
                        jurusan = '$jurusan',
                        alamat = '$alamat',
                        golongan_darah = '$golongan_darah',
                        nama_ibu_kandung = '$nama_ibu_kandung' WHERE nis = '$nis' ";

        $mysqli->query($sql) or die ($mysqli->error);

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

    $nis = $_GET['nis'];

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

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

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

    include 'views/v_tambah.php';
?>