Nomor 1

<?php

$kd = $_GET['kode'];

$query = $koneksi->query("SELECT * FROM barang WHERE KdBrg='$kd'");

$ambil = mysqli_fetch_array($query);

?>

<style>

.button {

background-color: black;

border-style: solid;

border-color: coral;

color: white;

padding: 10px 15px;

text-align: center;

text-decoration: none;

display: inline-block;

font-size: 16px;

margin: 4px 2px;

cursor: pointer;

}

</style>

<form method="POST">

<h1>Ubah Data Barang</h1>

<table>

<tr>

<td>Kode Barang :</td>

<td><input type="text" name="" value="<?php echo $ambil['KdBrg'] ?>" readonly=""></td>

</tr>

<tr>

<td>Nama Barang :</td>

<td><input type="text" name="txtNm" value="<?php echo $ambil['NmBrg'] ?>"></td>

</tr>

<tr>

<td>Harga :</td>

<td><input type="text" name="txtHr" value="<?php echo $ambil['Harga'] ?>"" onkeyup="this.value=this.value.replace(/[^\d]/,'')"></td>

</tr>

<tr>

<td colspan="2">

<input type="submit" class="button" value="Ubah" name="btnUbah">

</td>

</tr>

</table>

</form>

<?php

if (isset($_POST["btnUbah"]))

{

#tampung ke variabel yang isian dari form

$kode = $_POST["txtKd"];

$nama = $_POST["txtNm"];

$harga = $_POST["txtHr"];

#coba cek ada gak isinya

echo $kode . $nama . $harga;

$query = $koneksi->query("UPDATE barang SET NmBrg='$nama', Harga='$harga' WHERE KdBrg='$kd'") or die(mysqli_error($koneksi));

echo "<script>alert('Data berhasil diubah')</script>";

echo "<script>location = 'index.php?hal=tampil.php'</script>";

} #akhir tombol simpan diklik

?>