Description:
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Hi,

I was fooling around with the XmlReader class and I just thought to myself... Why are the values of the node type constants 1 to 17. Why not use 1, 2, 4, 8, 16, 32, 64, etc.
This way you could use bitwise operators:

while ($xmlReader->read())
{
  switch ($xmlReader->nodeType)
  {
    case XmlReader::ELEMENT:
      // Do stuff.
      break;
    case XmlReader::END_ELEMENT:
      // Do stuff.
      break;
    case (XmlReader::TEXT | XmlReader::CDATA):
      // Do stuff for text nodes and cdata nodes.
      break;
  }
}

This would improve readability of the code in many cases. This type of change could be done to other constants used in other classes/functions as well to improve their usability (can't think of any at the moment though).

Also, this type of change shouldn't cause anyone's (decent) code to break.

Thanks,

Paul