My interest was mostly because I'm working on a book chapter which includes some static analysis content, and there are a couple of these tools that I include in my own builds, but I don't do much with the output of them. However I didn't want to drop anything from the chapter if it was actually a valuable tool and I was just missing the point - pretty much all the tools got a good number of votes though, so I'll be covering all of the [options].

According to her results, the most used tool by developers is the PHP_CodeSniffer with the PHP Mess Detector and PHP Copy & Paste Detector tied for second place.