PHP meets .NET or vice versa

Had chat with Tim Heuer on PHP / .NET, here are 2 imp Q/A and his blog info -

Question: Are there developer tools for php?
Answer: There are tools that Zend (www.zend.com) provide as well as VS.PHP
Question: Can you talk on performance comparison between two?
Answer: http://www.iis.net/default.aspx?tabid=1000051

You can find some more on his blog: http://timheuer.com/blog