invisio v2.0

<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="utf-8" />
	</head>
	<body>
		<?php
include('config.php');
			$sno =1;
			$result = $js->query('SELECT * FROM `heads` ORDER BY `id`');
			$result->execute();
			while($row = $result->fetch(PDO::FETCH_ASSOC)) {
				$nw = $row['id'];
			}
				$sno = 'MI'.($nw + 1);

$namemisc = filter_input(INPUT_POST, 'miscname', FILTER_SANITIZE_STRING);
			$headtype = $_POST['headtype'];
			$namedesc = filter_input(INPUT_POST, 'des', FILTER_SANITIZE_STRING);
			$namemisc = strtoupper($namemisc);
			$js->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
			$sql = $js->prepare('INSERT INTO `heads` (`headid`, `name`, `headtype`, `descr`) VALUES (:sno, :namemisc, :headtype, :namedesc)');
			$status = $sql->execute(array(':sno' => $sno,
										':namemisc' => $namemisc,
										':headtype' => $headtype,
										':namedesc' => $namedesc));

if ($status) {
				$f = 1;
			} else {
				echo "Database Error";
				print_r($js->errorInfo());
			}
			
			if($f == 1) {
		?>
				<script type="text/javascript">
				alert("Have Successfully Added The Item");
				window.location = 'heads.php'</script>
				<?php
			}
		?>
	</body>
</html>