Output

Session started and value set.

File: get_session.php

<?php 
session_start(); 
if(isset($_SESSION["username"]))  
{ 
    echo "Welcome, " . $_SESSION["username"]; 
}  
else  
{ 
    echo "Session not set."; 
} 
?>

Output

Welcome Ali Khan

File: destroy_session.php

<?php 
session_start(); 
session_destroy(); 
echo "Session destroyed."; 
?>

Output

Session destroyed.