title: php global variable modifier not working
body: <p>I'm using the basic php example for the global modifier, and it doesn't work for me :-|</p>
  
  <pre><code>$a = 1;
  $b = 2;
  
  function Sum()
  {
      global $a, $b;
  
      $b = $a + $b;
  } 
  
  Sum();
  echo "***: ".$b;
  </code></pre>
  
  <p>Here is the result...
  $ ***: 2</p>
  
  <p>Is there any parameter on the php.ini that might effect this?</p>