simpan.php

<?php
$con = mysql_connect("localhost","root","");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}

mysql_select_db("dbsiswa", $con);

$sql="INSERT INTO mahasiswa (npm, nama, tempat_lahir, tgl_lahir, alamat)
VALUES
('$_POST[npm]','$_POST[nama]','$_POST[tempat_lahir]','$_POST[tgl_lahir]','$_POST[alamat]')";

if (!mysql_query($sql,$con))
{
die('Error: ' . mysql_error());
}
echo "1 record berhasil di masukkan...";
echo "<br><a href='index.php'>Kembali</a>";
echo "<br><a href='tampil.php'>Tampil</a>";
mysql_close($con)
?>