On a related note, DevSense has also taken over development the Phalanger project (a PHP compiler/runtime for .NET). It's Apache 2.0-licensed and on GitHub if you're interested: https://github.com/DEVSENSE/Phalanger
DevSense does provide some free tools for VS if you're using Phalanger, maybe they'd be good enough for what you want: http://visualstudiogallery.msdn.microsoft.com/419916fb-ec89-...
On a related note, DevSense has also taken over development the Phalanger project (a PHP compiler/runtime for .NET). It's Apache 2.0-licensed and on GitHub if you're interested: https://github.com/DEVSENSE/Phalanger
DevSense does provide some free tools for VS if you're using Phalanger, maybe they'd be good enough for what you want: http://visualstudiogallery.msdn.microsoft.com/419916fb-ec89-...