v_tambah upload

<form class="form-horizontal" action="<?php echo $action ?>
 "method="post" enctype="multipart/form-data">
 <table border="1">
 <thead>
<tr>
<tr>
   <td>Foto</td>
   <td>
    <?php if ($action == "edit.php") { ?>
     <img src="<?php echo base_url() ?>/media/images/<?php echo @$siswa['file']?>" width="80px" alt="" />
     <input type="hidden" name="foto" value="<?php echo @$siswa->file?>" />
    <?php } ?>
    <input type="file" name="foto" />
   </td>
  </tr>


        <td>NIS</td>
        <td><input type="text" name="nis"  class="nis"value="<?= @$siswa['nis'] ?>" <?= $disabled ?>></td></tr>
        <tr>
        <td>Nama Lengkap</td>
        <td><input type="text" name="nama_lengkap" class="nama" value="<?= @$siswa['nama_lengkap'] ?>" ></td></tr>
        <tr>
        <td>Jenis Kelamin</td>
        <td><input type="radio" name="jenis_kelamin" value="L" <?= @$siswa['jenis_kelamin'] == 'L' ? 'checked' : '' ?>> Laki-Laki
        <input type="radio" name="jenis_kelamin" value="P" <?= @$siswa['jenis_kelamin'] == 'P' ? 'checked' : '' ?>> Perempuan</td></tr>
        <tr>
        <td>Kelas</td>
        <td><select name="kelas" class="kls">
            <option value="XI-RPL1" <?= @$siswa['kelas'] == 'XI-RPL1' ? 'selected' : '' ?>> XI-RPL1</option>
            <option value="XI-RPL2" <?= @$siswa['kelas'] == 'XI-RPL2' ? 'selected' : '' ?>> XI-RPL2</option>
            <option value="XI-RPL3" <?= @$siswa['kelas'] == 'XI-RPL3' ? 'selected' : '' ?>> XI-RPL3</option>
        </select></td></tr>
        <tr>
        <td>Jurusan</td>
            <td><input type="text" name="jurusan" class="jr" value="<?= @$siswa['jurusan'] ?>"></td></tr>
        <tr>
        <td>Alamat</td>
        <td><input type="text" name="alamat" class="alm" value="<?= @$siswa['alamat'] ?>"></td></tr>
        <tr>
        <td>GolonganDarah</td>
            <td><input type="radio" name="golongan_darah" value="A" <?= @$siswa['golongan_darah'] == 'A' ? 'checked'  : ''?>> A</input>
            <input type="radio" name="golongan_darah" value="B" <?= @$siswa['golongan_darah'] == 'B' ? 'checked'  : '' ?>> B</input>
            <input type="radio" name="golongan_darah" value="AB" <?= @$siswa['golongan_darah'] == 'AB' ? 'checked'  : '' ?>> AB</input>
            <input type="radio" name="golongan_darah" value="O" <?= @$siswa['golongan_darah'] == 'O' ? 'checked'  : '' ?>> O </input></td></tr>
            <tr>
        <td>Nama Ibu Kandung</td>
        <td><input type="text" name="nama_ibukandung" class="nik" value="<?= @$siswa['nama_ibukandung'] ?>"><br></td></tr>

     </thead>

    </table>
   <input type="submit" class="btn-src" name="Simpan">
  </form>