css3-selector
There are 2 repositories under css3-selector topic.
redcatphp/templix
HTML5 based Template Engine with Recursive Extends and CSS3 Selectors to work on DOM like with Jquery
ox-harris/phpfront
phpFront is a server-side, DOM-based template engine. It implements the JQuery API with its powerful CSS3 selectors and chainable methods. It is heavily optimized for server-side rendering and template manipulation in web development. (No template syntaxes - because we hate them like everyone else does!)