edit.php

<?php include "header.php"; ?>
<link rel="stylesheet" href="css/bootstrap.min.css">
<style>
	.gram {
		margin-left: -25px;
		margin-top: 5px;
	}
</style>

<?php
$sqlEdit = mysqli_query($konek, "SELECT * FROM barang WHERE kode='$_GET[id]'");
$e = mysqli_fetch_array($sqlEdit);
?>

<div class="container" style="margin-top:20px">
	<h3>Update Data Barang</h3>

	<hr>

	<form method="post" action="">
		<input type="hidden" name='kode' value="<?php echo $e['kode']; ?>" />
		<table>
			<div class="form-group row">
				<label class="col-sm-2 col-form-label">Kode</label>
				<div class="col-sm-10">
					<input type="text" name="kode" class="form-control" size="4" value="<?php echo $e['kode']; ?>">
				</div>
			</div>
			<div class="form-group row">
				<label class="col-sm-2 col-form-label">Nama</label>
				<div class="col-sm-10">
					<input type="text" name="nama" class="form-control" value="<?php echo $e['nama']; ?>" maxlength="50" required>
				</div>
			</div>
			<div class="form-group row">
				<label class="col-sm-2 col-form-label">Deskripsi</label>
				<div class="col-sm-10">
					<input type="text" name="deskripsi" class="form-control" value="<?php echo $e['deskripsi']; ?>">
				</div>
			</div>

			<div class="form-group row">
				<label class="col-sm-2 col-form-label">Stok</label>
				<div class="col-sm-10">
					<input type="text" name="stok" class="form-control" value="<?php echo $e['stok']; ?>">
				</div>
			</div>
			<div class="form-group row">
				<label class="col-sm-2 col-form-label">Harga</label>
				<div class="col-sm-10">
					<input type="text" name="harga" class="form-control" value="<?php echo $e['harga']; ?>">
				</div>
			</div>
			<div class="form-group row">
				<label class="col-sm-2 col-form-label">Berat</label>
				<div class="col-sm-3">
					<input type="text" name="berat" class="form-control" value="<?php echo $e['berat']; ?>">
				</div>
				<div class="col-sm-3">
					<p class="gram">Gram</p>
				</div>
			</div>
			<div class="form-group row">
				<label class="col-sm-2 col-form-label">&nbsp;</label>
				<div class="col-sm-10">
					<input type="submit" value="Update" class="btn btn-success" />
				</div>
			</div>
		</table>
	</form>

	<!-- proses edit data -->
	<?php
	if ($_SERVER['REQUEST_METHOD'] == 'POST') {

		//variabel untuk menampung inputan dari form
		$kode 	= $_POST['kode'];
		$nama 	= $_POST['nama'];
		$deskripsi 	= $_POST['deskripsi'];
		$stok 	= $_POST['stok'];
		$harga 	= $_POST['harga'];
		$berat 	= $_POST['berat'];

		if ($kode == '' || $nama == '' || $stok == '') {
			echo "Form Kosong";
		} else {
			$update = mysqli_query($konek, "UPDATE barang SET kode='$kode',
											nama='$nama',
											deskripsi='$deskripsi',
											stok='$stok',
											harga='$harga',
											berat='$berat'
										WHERE kode='$kode'");

			if (!$update) {
				echo "Update data gagal...";
			} else {
				echo '<script>window.location.href = "index.php";</script>';
			}
		}
	}
	?>