I was curious as to whether or not there exists a jQuery-style interface/library for PHP for handling HTML/XML files -- specifically using jQuery style selectors.
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The best one I found is https://github.com/scotteh/php-dom-wrapper
It works very similarly as jQuery, and it is fast.
I tried many libraries from other answers, but I didn't manage to port the manipulations I was doing in jQuery easily. With this one it was a breeze. I guess it will become more popular soon...