session1.php file
<?php
session_start();
if(isset($_SESSION['views']))
$_SESSION['views'] = $_SESSION['views']+ 1;
else
$_SESSION['views'] = 1;
echo "views = ". $_SESSION['views'];
?>
<!doctype html>
<head>
</head>
<body>
<script type="text/javascript">
function logoutck() {
var r = confirm("Do you really want to log out?");
if (r) {
window.location.href = 'logout.php'
}
}
</script>
<input id="button1" type='button' onclick='logoutck();' value='LOGOUT'/>
</body>
</html>
logout.php file
<?php
session_start();
if(isset($_SESSION['views']))
unset($_SESSION['views']);
header("Location: session1.php");
?>