An Empirical Study of PHP Feature Usage: A Static Analysis Perspective Jul 15, 2013· Mark Hills Paul Klint Jurgen Vinju · 0 min read PDF Last updated on Jul 15, 2013 Authors Mark Hills Associate Professor Authors Paul Klint Authors Jurgen Vinju ← PHP AiR: Analyzing PHP Systems with Rascal Feb 3, 2014 Enabling PHP Software Engineering Research in Rascal Jul 1, 2013 →