title: Logout PHP Script
body: <p>This is my script:</p>
  
  <pre><code>&lt;?php
    // If the user is logged in, delete the session vars to log them out
    session_start();
    if (isset($_SESSION['user_id'])) {
      // Delete the session vars by clearing the $_SESSION array
      $_SESSION = array();
  
      // Delete the session cookie by setting its expiration to an hour ago (3600)
      if (isset($_COOKIE[session_name()])) {      setcookie(session_name(), '', time() - 3600);    }
  
      // Destroy the session
      session_destroy();
    }
  
    // Delete the user ID and username cookies by setting their expirations to an hour ago (3600)
    setcookie('user_id', '', time() - 3600);
    setcookie('username', '', time() - 3600);
  
    // Redirect to the home page
    $home_url = 'http://' . $_SERVER['HTTP_HOST'] . dirname($_SERVER['PHP_SELF']) . '/index.php';
    header('Location: ' . $home_url);
  ?&gt;
  </code></pre>
  
  <p>I cannot log out once logged in on the site. Do I really need cookie'd logins or can I take that out?</p>