function viewdata() {

   $cetak .="<h3>Daftar Peserta Didik</h3>";
   $cetak .= "<form action='index.php' method=get >
   Nama : <input type=text name=nama value='".$_GET['nama']."' /> <input type=submit value='Cari' />
   <input type=hidden name='id' value='lihat' /></form>";
   $cetak .= "<br><table id='tablebaru' width='800' ><tr >
   <td class='header' width='5'>No</td><td class='header' width='100'>NISN</td>
   <td class='header' >Nama</td><td class='header' width='50'>Kel</td>
   <td class='header' width='100'>Kontrol</td></tr>";
   $i=1;
   $host = localhost; // isi sesuai settingan sql kamu
    $username =root;
    $password = test123;
    $db = daftar_ulang;
    $con = mysqli_connect($host, $username, $password, $db);
   $sql = mysqli_query($con, "select * from t_siswa where namalengkap like'%".$_GET['nama']."%'");

   while($row=mysqli_fetch_array($sql)) {
        $td = ($i % 2 ) ? $td ="td1":"td2";
        $cetak .="<tr class='$td' onMouseOver=\"this.className='highlight'\" onMouseOut=\"this.className='$td'\" >
        <td class='td' >".$i."</td>
        <td class='td' >".$row['id']."</td>
        <td class='td' >".$row['namalengkap']."</td>
        <td class='td' >".$row['kelamin']."</td>

		<td class='td' ><a href='index.php?id=edit&kode=".$row['id']."' title='Klik untuk lihat data' >Lihat Data</a>
        </td>
        </tr>";
        $i++;
    }
   $cetak .="</table><br>";

    return $cetak;
}