<?php
$valid_passwords = array ('login' => 'heslo');
$valid_users = array_keys($valid_passwords);

$user = $_SERVER['PHP_AUTH_USER'];
$pass = $_SERVER['PHP_AUTH_PW'];

$validated = (in_array($user, $valid_users)) && ($pass == $valid_passwords[$user]);

if ($validated == "true") {
    header("Location: index1.php");
}

else {
    header("Location: index2.html");
}
?>