delete.php
<?php
include "koneksi.php";
$id = $_GET['id'];
mysql_query("delete from user where id_user=$id");
header( 'Location: tampil.php' ) ;
?>
simpan.php
<?php
include "koneksi.php";
$username = $_POST['username'];
$password = $_POST['password'];
$password = md5($password);
$email = $_POST['email'];
mysql_query("insert into user (`username`,`password`,`email`) values('$username','$password','$email')");
header(...
