kalau kta ingin menampilkan data perkelas gimana gan,,,
misalnya kita buat combobox dan didalam kombobox tersebuat ada pilihan kelas ketika kita pilih kelas X maka akan tampil semua data siswa yang ada di kelas X tersebut
ini scrift nya
<?php
include "include/koneksi.php";
include "include/setting.php";
//Apabila klik cari
if(isset($_POST['cari'])) {
$cnis=$_POST['cnis'];
$carix = "select * from tblsiswa where nis='$cnis'"; 
$cari=mysql_query($carix);
if($cari){
header("location:tampil_siswa.php?nis=$cnis");
}
}
?>
<HTML>
<HEAD><TITLE><?php echo"$judul";?></TITLE>
<link rel="stylesheet" href="css/style.css" type="text/css">
<script type="text/javascript" src="jquery/jquery.js"></script>
<style type="text/css">
<!--
.style4 {color: #FF3300}
-->
</style>
</head>
    <body leftmargin=0 topmargin=0 marginheight="0" marginwidth="0" bgcolor="#ffffff">
<table border="0" cellspacing="0" cellpadding="0" width="100%" height="83%">
  <tr>
	<td width="50%" background="gambar/bg.gif"><img src="gambar/px1.gif" width="1" height="1" alt="" border="0"></td>
	<td valign="bottom" background="gambar/bg_left.gif"><img src="gambar/bg_left.gif" alt="" width="17" height="16" border="0"></td>
	<td><table width="780" border="0" cellspacing="0" cellpadding="0">
        <tr>
          <td><?php include "header.php"; ?></td>
        </tr>
        <tr>
          <td>
          <?php include "menu_atas.php"; ?></td>
        </tr>
		 <tr>
          <td background="gambar/fon_top.jpg"><p>
          </td>
        </tr>
      </table>
      <table width="774" border="0" cellspacing="0" cellpadding="1">
        <tr>
          <td width="115" valign="top"><p>
            <?php include "menu_kiri.php"; ?>
          </p>          </td>
        <td valign="top"><h2 align="center"><strong>Data Siswa </strong></h2>
          <form id="form2" name="form2" method="post" action="">
		<table width="210" border="0" align="center" cellpadding="1" cellspacing="0">
                <tr>
                  <td width="50"><div align="center"><img src="gambar/search.gif" width="50" height="50" /></div></td>
                  <td width="180"><input name="cnis" type="text" id="cnis" size="10" />
                      <input name="cari" type="submit" id="cari" value="Cari" /></td>
                </tr>
<tr>
		<td>Plih Kelas</td>
		<td>
		<select title="kelas" name="id_kelas" id="id_kelas" onChange="kelas(id_kelas.value)">
		<option value="0" selected="selected">Pilih Kelas</option>
		<?
		include "include/koneksi.php";
		$query=mysql_db_query($db,"select * from tblsiswa",$koneksi);
		
		while($row=mysql_fetch_array($query))
		{
			?><option value="<? echo $row['id_kelas']; ?>"><? echo $row['kelas']; ?></option><?
		}
		?>
		</select>		
		</td>
	</tr>
              </table>
            </form>
	<table width="509" border="1" align="center" cellpadding="1" cellspacing="0">
              <tr valign="top">
                <td width="83"><div align="center"><strong>NIS</strong></div></td>
                <td width="120"><div align="center"><strong>Nama Siswa</strong></div></td>
				<td width="84"><div align="center"><strong>Jenis Kelamin</strong></div></td>
                <td width="68"><div align="center"><strong>Kelas</strong></div></td>
                <td width="52"><div align="center"><strong>Detail</strong></div></td>
              </tr>
    </tr></table>
<p> </p>
          
          <td width="81" valign="top" bgcolor="#FFFFFF"><?php include "menu_kanan.php"; ?></td>
  </tr>
      </table>
	  <div class="px" align="center"><img src="gambar/bot01.jpg" width="845" height="9" alt="" border="0"></div>
<table border="0" cellspacing="0" cellpadding="0" width="780" align="center">
<tr>
	<td><p align="center">
	  <?php include "footer.php"; ?>
	</p></td>
	      <td height="50"> 
            <p class="bot"> </p>
	</td>
</tr>
</table>
	</td>
	<td valign="bottom" background="gambar/bg_right.gif"><img src="gambar/bg_right.gif" alt="" width="17" height="16" border="0"></td>
	<td width="50%" background="gambar/bg.gif"><img src="gambar/px1.gif" width="1" height="1" alt="" border="0"></td>
</tr>
</table>
</body>
</html>
  
  
  
  ini table siswa nya
  
  CREATE TABLE IF NOT EXISTS `tblsiswa` (
  `nis` varchar(10) NOT NULL,
  `nama_siswa` varchar(35) NOT NULL,
  `tempat_lahir` varchar(35) NOT NULL,
  `tgl_lahir` date NOT NULL,
  `alamat` text NOT NULL,
  `kelas` varchar(10) NOT NULL,
  `semester` int(1) NOT NULL,
  `jenis_kelamin` varchar(15) NOT NULL,
  `agama` varchar(20) NOT NULL,
  `foto` varchar(40) NOT NULL,
  PRIMARY KEY (`nis`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
--
-- Dumping data untuk tabel `tblsiswa`
--
INSERT INTO `tblsiswa` (`nis`, `nama_siswa`, `tempat_lahir`, `tgl_lahir`, `alamat`, `kelas`, `semester`, `jenis_kelamin`, `agama`, `foto`) VALUES
('10101', 'adies', 'bkj', '1990-04-02', 'tkn', 'X', 1, 'Laki-Laki', 'Islam', 'q.jpg'),
('2011001', 'M. Faris Azmi', 'Dasan Baru Kesik', '1995-02-01', 'Dasan Baru Kesik, Masbagik Lombok Timur', 'X', 1, 'Laki-Laki', 'Islam', 'a.jpg'),
('2011002', 'Alicia', 'Mataram', '1977-02-02', 'Dasan Agung Mataram', 'X', 1, 'Perempuan', 'Islam', 'q.jpg'),
('2011003', 'Irvan Bachdim', 'Jakarta', '1994-02-01', 'Jakarta Utara', 'XII', 1, 'Laki-Laki', 'Islam', '1bachdim.jpg'),
('2011004', 'Siti Aminah', 'Praya', '1994-06-17', 'Praya Lombok Tengah', 'XI', 2, 'Perempuan', 'Islam', 'foto3.jpg'),
('2011005', 'Eko Patrio', 'Selong', '1996-08-02', 'Selong Lombok Timur', 'XI', 2, 'Laki-Laki', 'Islam', '17mark_zuckerberg.jpg'),
('2011006', 'Ayu Ningsih', 'Gomong', '1994-04-05', 'Gomong Lama Mataram', 'XI', 2, 'Perempuan', 'Islam', 'alicia4.jpg'),
('2011007', 'Evi Tamala', 'Gerung', '1995-12-02', 'Gerung Lombok Barat', 'X', 2, 'Perempuan', 'Islam', 'campbells.jpg'),
('2011008', 'Luna Maya', 'Mataram', '1994-10-05', 'Ampenan Mataram', 'XI', 2, 'Perempuan', 'Islam', 'lunamaya2.jpg'),
('2011009', 'Putri Maharani', 'Masbagik', '1993-01-09', 'Masbagik Lombok Timur', 'XI', 2, 'Perempuan', 'Islam', 'foto4.jpg');