Your comments

Hello Pablo,

Thanks for asking! As you've correctly mentioned, there are paid ebooks for those, who want the offline version of our content. Some people buy them as a donation, though (and we really appreciate that) – we could have closed half of the website's content and sell premiums, but we didn't.
Actually, there is. Please, check this out: http://www.php.net/manual/en/language.oop5.cloning.php
Hello Dwayne,

It looks great! Can we publish it on the website?