title: Tools to visually analyze memory usage of a PHP app
body: <p>Is there anything out there freeware or commercial that can facilitate analysis of memory usage by a PHP application?  I know xdebug can produce trace files that shows memory usage by function call but without a graphical tool the data is hard to interpret. </p>
  
  <p>Ideally I would like to be able to view not only total memory usage but also what objects are on the heap and who references them similar to <a href="http://www.codework.com/jprofiler/product.htm" rel="noreferrer">Jprofiler</a>.</p>