PHP Code for Automatic Expire Login Session

Hey Friends, Today I am going to describe the PHP Code regarding automatic expire session login in a website. It is very easy to expire session for login for sometime or specified time.

			<?php

//on pageload

session_start();

$idletime=60;//after 60 seconds the user gets logged out

if (time()-$_SESSION['timestamp']>$idletime){

session_destroy();

session_unset();

}else{

$_SESSION['timestamp']=time();

}

//on session creation

$_SESSION['timestamp']=time();