With the release of the second version of the CakePHP framework, the documentation has also been updated - book.cakephp.org/2.0/ . And most importantly, an offline dock appeared. You can download directly from the first page of the cookbook: CakePHPCookbook.epub . You can download source files from the githab or help with translation and correction.
I was too lazy to look for something that reads the .epub format and I just unpacked the files and got a lot of html pages. Such documentation looks something like this . Zip with html pages download from here