title: How to avoid deprecation warning by replacing session_unregister with $SESSION[] after upgrading to PHP 5.3?
body: <p>I just installed <strong>PHP 5.3</strong> and am weeding out consequent "<strong>deprecated</strong>" warnings.</p>
  
  <p>It says <strong><code>session_unregister() is deprecated</code></strong> in:</p>
  
  <pre><code>session_unregister($serverWideUniqueIdCode);
  </code></pre>
  
  <p>and the replacement seems to be $_SESSION[].</p>
  
  <p><strong>So what would be the syntax with <code>$_SESSION[]</code> to express the same thing?</strong></p>