Site/account_proverka.php

<?php
session_start();
$role = $_SESSION['role'];
if($role == 1)   
    {
        echo "<script>window.location.href = 'Adminpage.php';</script>";
    }
if($role == 0)   
    {
        echo "<script>window.location.href = 'UserAccount.html';</script>";
    }   
?>