Nomor 2

.button {

border-color: red;

color: white;

padding: 5px 10px;

background: #000000;

display: table;

}

.button1 {

border-style: solid;

border-color: green;

border-width: 2px;

color: white;

padding: 5px 10px;

background: #919188;

margin: 5px;

display: block;

text-decoration: none;

text-align: center;

}

.button1:hover{

background: #000000;

}

<?php

error_reporting(~E_NOTICE); #ini digunakan utk menyembunyikan error khusus notice khususnya di index / beranda

$koneksi = new mysqli("localhost", "root", "", "db_kk0918");

if ($koneksi->connect_error)

{

echo "Gagal terhubung karena " . $koneksi->connect_error;

}

?>

<link rel="stylesheet" type="text/css" href="stylee.css">

<table border="1" width="85%" align="center">

<tr align="center">

<td colspan="2"><img src="images/header.png" height="64px" width="100%"></td>

</tr>

<tr>

<td width="10%">

<h3>Menu</h3>

<!-- <ul id="contoh">

<li><a href="index.php">Beranda</a></li>

<li><a href="index.php?hal=tentang.php">Tentang</a></li>

<li><a href="index.php?hal=entry.php">Entry (C)</a></li>

<li><a href="index.php?hal=tampil.php">Tampil (R)</a></li>

<li><a href="index.php?hal=ubah.php">Ubah (U)</a></li>

<li><a href="index.php?hal=hapus.php">Hapus (D)</a></li>

</ul> -->

<a href="index.php" class="button1">Beranda</a>

<a href="index.php?hal=tentang.php" class="button1">Tentang</a>

<a href="index.php?hal=entry.php" class="button1">Entry (C)</a>

<a href="index.php?hal=tampil.php" class="button1">Tampil (R)</a>

<a href="index.php?hal=ubah.php" class="button1">Ubah (U)</a>

<a href="index.php?hal=hapus.php" class="button1">Hapus (D)</a

</td>

<td align="justify">

<?php

$hal = $_GET["hal"]; #echo $_GET["hal"]; utk nampilin isi yang dari kita get/post dari index.php?hal=xxx.php

if (isset($hal) && $hal!="")

{ #kondisi ini akan dijalankan jika variabel $hal digunakan dan variabel $hal isinya bukan kosong

include($hal);

}

else

{

echo "<h1>Selamat Datang</h1><p>Saya datang dari Habang, jauh menuntut ilmu, biarlah yang penting saya bisa. Saya yakin pasti bisa <strong>#nekbisanekkawa</strong></p>";

}

?>

</td>

</tr>

<tr align="center">

<td colspan="2" background="images/akbar.png">footer</td>

</tr>

</table>

<link rel="stylesheet" type="text/css" href="stylee.css">

<form method="POST">

<h1>Entry Data Barang</h1>

<table>

<tr>

<td>Kode Barang :</td>

<td><input type="text" name="txtKd"></td>

</tr>

<tr>

<td>Nama Barang :</td>

<td><input type="text" name="txtNm"></td>

</tr>

<tr>

<td>Harga :</td>

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

</tr>

<tr>

<td colspan="2">

<input class="button" type="submit" value="Simpan" name="btnSimpan">

</td>

</tr>

</table>

</form>

<?php

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

{

#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 = $koneksi->query("INSERT INTO `db_kk0918`.`barang` (`KdBrg`, `NmBrg`, `Harga`) VALUES ('$kode', '$nama', '$harga')");

} #akhir tombol simpan diklik

?>