sabberworm/PHP-CSS-Parser — pull request #69 by slusarz (2013-09-25 07:44:22+00:00)
Title: Performance take2

So a smaller, less ambitious performance try. The combination of these provides about a 25% performance boost, at least according to xdebug data.

peek() is the deadly method that needs to be worked on further. It consumes about 36% of runtime. comes() is the next biggest performance hog, but it only consumes about 11%.