<?php
    $pass = $_POST['password'];
    $password = 123; # Your Password

    session_start();
    if(!isset($_SESSION['password'])) {
        $_SESSION['password'] = false;
        header('Location:index.php');
    } elseif (isset($_SESSION['password'])) {
        if($pass == $password) {
            $_SESSION['password'] = true;
            header('Location:home.php');
        } else {
            echo '  <script>
                        alert("Incorrect Password!");
                        window.location = "http://corvia-ot.com/loz/index.php"
                    </script>
                ';
        }
    }
?>