<?php
include('koneksi.php');
$username = $_POST['username'];
$password = $_POST['password'];
$query = mysql_query("SELECT * FROM login WHERE username = '$username' AND password = '$password' ");
$cek = mysql_num_rows($query);
if($cek == 0) {
    echo "<script>alert('Login gagal, periksa username dan password anda');location='index.php'</script>";
}else{
    $row = mysql_fetch_assoc($query);
    session_start();
    $_SESSION['username'] = $row['username'];

    echo "<script>alert('Login berhasil');location='home.php'</script>";
}
?>