GDSDG

<?php
include "koneksi2.php";
$username = $_POST['names'];
$password = $_POST['pass'];
if (empty($username)){
echo "<script>alert('Username belum diisi')</script>";
echo "<meta http-equiv='refresh' content='1 url=index.html'>";
}else if (empty($password)){
echo "<script>alert('Password belum diisi')</script>";
echo "<meta http-equiv='refresh' content='1 url=index.html'>";
}else{
session_start();
$login = mysql_query("select * from users where username='$username' and password='$password'");
if (mysql_num_rows($login) > 0){
$_SESSION['username'] = $username;
header("location:index.php");
}else{
echo "<script>alert('Username atau Password salah')</script>";
echo "<meta http-equiv='refresh' content='1 url=index.html'>";
}
}

?>