title: URL doesn't like ampersand
body: <p>Do I have to worry about the error warning (<strong>Notice: Undefined index: page in</strong>...) when the url is <code>username=guest&amp;amp;page=1</code> since previously it was <code>username=guest&amp;page=1</code>?</p>
  
  <p>It only happens when I test 'log in' and 'log off'.</p>
  
  <p>The URL comes from <code>htmlspecialchars($_SERVER['REQUEST_URI'])</code></p>
  
  <p>Any way to just convert <code>&amp;amp;</code> back to  <code>&amp;</code>?</p>
  
  <p>If not, I'll just find a way to remove</p>