Hi, im newbie here.
Please anyone can help me solved this problem?
Notice: Undefined variable: jumlah_mainboard in C:\xampp\htdocs\latihan\pesan.php on line 31
Notice: Undefined index: harga_mainboard in C:\xampp\htdocs\latihan\pesan.php on line 12
Notice: Undefined index: harga_processor in C:\xampp\htdocs\latihan\pesan.php on line 14
Notice: Undefined index: harga_ram in C:\xampp\htdocs\latihan\pesan.php on line 16
Notice: Undefined index: harga_hardisk in C:\xampp\htdocs\latihan\pesan.php on line 18
Notice: Undefined index: jumlah_mainboard in C:\xampp\htdocs\latihan\pesan.php on line 22
Notice: Undefined index: jumlah_processor in C:\xampp\htdocs\latihan\pesan.php on line 24
Notice: Undefined index: jumlah_ram in C:\xampp\htdocs\latihan\pesan.php on line 26
Notice: Undefined index: jumlah_hardisk in C:\xampp\htdocs\latihan\pesan.php on line 28
Notice: Undefined index: diskon in C:\xampp\htdocs\latihan\pesan.php on line 40
<?php
/*inisiasi variabel yang digunakan
nama peralatan
*/
$mainboard = "Mainboard";
$processor = "Processor";
$ram = "Ram";
$hardisk = "Hardisk";
//harga per unit peralatan
$harga_mainboard = $_POST['harga_mainboard'];
$harga_processor = $_POST['harga_processor'];
$harga_ram = $_POST['harga_ram'];
$harga_hardisk = $_POST['harga_hardisk'];
//Jumlah peralatan yang ada
$jumlah_mainboard = $_POST['jumlah_mainboard'];
$jumlah_processor = $_POST['jumlah_processor'];
$jumlah_ram = $_POST['jumlah_ram'];
$jumlah_hardisk = $_POST['jumlah_hardisk'];
//Total Harga per jenis peralatan
$total_mainboard = $harga_mainboard * $jumlah_mainboard;
$total_processor = $harga_processor * $jumlah_processor;
$total_ram = $harga_ram * $jumlah_ram;
$total_hardisk = $harga_hardisk * $jumlah_hardisk;
//hitung peralatan total
$total_harga = $total_mainboard + $total_processor + $total_ram + $total_hardisk;
//besar discount untuk peralatan
$diskon = $_POST['diskon'];
//jumlah total diskon yang diberikan
$nilai_diskon = ($diskon * $total_harga)/100;
//jumlah yang harus di bayar
$total_harga_bayar = $total_harga - $nilai_diskon;
?>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>daftar Peralatan yang dibeli</title>
</head>
<body>
<center>
<form action="pesan.php" method="post">
<table border="1" cellspacing="0" cellpadding="3">
<tr>
<td colspan="4" align="center" valign="middle">
<b>Daftar Pemesanan Hardware Komputer </b></td>
</tr>
<tr align="center">
<td width="136"><b>Nama Hardware</b></td>
<td width="49"><b>Jumlah</b></td>
<td width="109"><b>Harga Satuan</b></td>
<td Width="96"><b>Jumlah Harga</b></td>
</tr>
<tr>
<td align="left"><?php echo $mainboard; ?></td>
<td align="right"><input name="jumlah_mainboard"
type="text" size="3" value="<?php echo $jumlah_mainboard; ?>" /></td>
<td align="right"><input name="harga_mainboard"
type="text" size="15" value="<?php echo $harga_mainboard; ?>" /></td>
<td align="right"><input name="total_mainboard"
type="text" size="3" value="<?php echo $total_mainboard; ?>" /></td>
</tr>
<tr>
<td align="left"><?php echo $processor; ?></td>
<td align="right"><input name="jumlah_processor"
type="text" size="3" value="<?php echo $jumlah_processor; ?>" /></td>
<td align="right"><input name="harga_processor"
type="text" size="15" value="<?php echo $harga_processor; ?>" /></td>
<td align="right"><input name="total_processor"
type="text" size="3" value="<?php echo $total_processor; ?>" /></td>
</tr>
<tr>
<td align="left"><?php echo $ram; ?></td>
<td align="right"><input name="jumlah_ram"
type="text" size="3" value="<?php echo $jumlah_ram; ?>" /></td>
<td align="right"><input name="harga_ram"
type="text" size="15" value="<?php echo $harga_ram; ?>" /></td>
<td align="right"><input name="total_ram"
type="text" size="3" value="<?php echo $total_ram; ?>" /></td>
</tr>
<tr>
<td align="left"><?php echo $hardisk; ?></td>
<td align="right"><input name="jumlah_hardisk"
type="text" size="3" value="<?php echo $jumlah_hardisk; ?>" /></td>
<td align="right"><input name="harga_hardisk"
type="text" size="15" value="<?php echo $harga_hardisk; ?>" /></td>
<td align="right"><input name="total_hardisk"
type="text" size="3" value="<?php echo $total_hardisk; ?>" /></td>
</tr>
<tr>
<td colspan="3" align="right">Total Harga</td>
<td align="right"><?php echo $total_harga; ?></td>
</tr>
<tr>
<td colspan="3" align="right">
<p>Diskon
<input name="Diskon" type="text" size="2" value="<?php echo $diskon;?>" />
%</p></td>
<td align="right"><?php echo $nilai_diskon; ?></td>
</tr>
<tr>
<td colspan="3" align="right">Jumlah harus dibayar</td>
<td align="right"><?php echo $total_harga_bayar;?></td>
</tr>
<tr>
<td colspan="4" align="center">
<input type="submit" value="OK" />
<input type="reset" value="Batal" /></td>
</tr>
</table>
</form>
</center>
</body>