title: PHP If (!isset(...) || !isset(...))
body: <p>I'm trying to check if the first <code>$_COOKIE['one']</code> exists OR the second <code>$_COOKIE['two']</code> exists and if none exists to redirect the user.</p>
  
  <p>Only one of those two cookies are going to exist when this script is running.</p>
  
  <pre><code>if (!isset($_COOKIE['one']) || !isset($_COOKIE['two'])) {
      header('Location: ./');
  } else {
      ...
  }
  </code></pre>
  
  <p>I tried many things but every time I get into this if altough one of those cookies always exist.</p>