@noellemitchell WebCore version 0.6.1 (from the footer of the pages) was released on February 9th, 2010.

And, funnily enough, I did not actually include this as a framework feature due to the risk of it being "too evil"—too easy to abuse or unintentionally expose to data theft. Does everyone really check that they've properly configured all of the sensitive variable names, so they aren't captured?

I've worked with PHP in the past.
Everyone does not. 😜