How to test session timeout in php?

Question

Why doesn't this code work?

session_start();

// 5 mins in seconds
$inactive = 300; 
$session_life = time() - $_session['timeout'];
if($session_life > $inactive)
{  
    session_destroy(); header("Location: client_login.php");     
} 
else 
{
    $_session['timeout']=time();
}

Answer 1

Check :

print_r($_SESSION) and print_r($_SESSION['timeout'])

Answer 2

you can var_dump( $_session ); after your if/else statement and see if $_session['timeout'] is set or has a value. following session_destroy() the session should be empty.

update

Try changing $_session to $_SESSION . This is a special PHP variable and case may matter