pegawai-ubah-form.php:
<?php
require "config.php";
$sql = "SELECT * FROM pegawai WHERE nokom='".$_GET['nokom']."'";
$result = mysqli_query($conn, $sql);
$data = mysqli_fetch_array($result);
?>

<form name="pegawai" action="pegawai-ubah-proses.php" method="post">
  <table width="700px" align="left" cellpadding="2" cellspacing="0">
    <tr>
      <td><b>NOKOM</b></td>
      <td><b>:</b></td>
      <td><input type="text" name="nokom" size="40" value="<?php echo $data['nokom'] ?>" readonly /></td>
    </tr>
    <tr>
      <td><b>NIP</b></td>
      <td><b>:</b></td>
      <td><input type="text" name="nip" size="40" value="<?php echo $data['nip'] ?>"  /></td>
    </tr>
    <tr>
      <td><b>Nama</b></td>
      <td><b>:</b></td>
      <td><input type="text" name="nama" size="40" value="<?php echo $data['nama'] ?>"  /></td>
    </tr>
    <tr>
      <td><b>Psw Online 1</b></td>
      <td><b>:</b></td>
      <td><input type="password" name="uol1" size="40" value="<?php echo $data['uol1'] ?>"  /></td>
    </tr>
    <tr>
      <td><b>Psw Online 2</b></td>
      <td><b>:</b></td>
      <td><input type="password" name="uol2" size="40" value="<?php echo $data['uol2'] ?>"  /></td>
    </tr>
    <tr>
      <td></td>
      <td></td>
      <td><hr/><input type="submit" name="upload" value="Upload" /></td>
    </tr>
  </table>
</form>

-------------------------------------------------------------

pegawai-ubah-proses.php:
<?php session_start();
include "config.php";

if(ISSET($_SESSION['superadmin']))
{
  if(ISSET($_POST['upload']))
  {
    $nokom      = $_POST['nokom'];
    $nip        = $_POST['nip'];
    $nama       = $_POST['nama'];
    $uol1       = password_hash($_POST['uol1'], PASSWORD_DEFAULT);
    $uol2       = password_hash($_POST['uol2'], PASSWORD_DEFAULT);

    // Proses update data dari form ke db
      $sql = "UPDATE pegawai SET nokom='$nokom',nip='$nip',nama='$nama',uol1='$uol1',uol2='$uol2' WHERE nokom='$nokom' LIMIT 1";

      if (mysqli_query($conn, $sql))
      {
        echo "<script>alert('Update data berhasil! Klik ok untuk melanjutkan');location.replace('pegawai-list.php')</script>";
      }
        else
        {
          echo "Error updating record: " . mysqli_error($conn);
        }
  }
}
  else
  {
    echo '<script>alert("Anda bukan Super Admin! Silahkan login menjadi Super Admin terlebih dahulu");location.replace("index.php")</script>';
  }
?>