<?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'];
        $gol_darah = $_POST['gol_darah'];
        $nama_ibu = $_POST['nama_ibu'];

        $sql = "UPDATE siswa SET nis = '$nis', nama_lengkap = '$nama_lengkap', jenis_kelamin = '$jenis_kelamin', kelas = '$kelas', jurusan = '$jurusan', alamat = '$alamat', gol_darah = '$gol_darah', nama_ibu = '$nama_ibu' WHERE nis = '$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';
?>