On the Code2Learn blog there's a recent tutorial about creating PDFs from CodeIgniter using the R&OS PDF class (not bundled with the framework, but easy to integrate).

As a programmer I find PDF files very helpful to me when generating reports and getting them printed. We will be using R&OS pdf class. I find this to be the best one because all others libraries I came across didn't offer me a good control over the making of the file and also the process of making i.e the code required for this library is bit tricky but it helped me improve my coding.

Code is included to create a simple PDF helper class that creates a new "cezpdf" object and add some basic things like titles, page numbers and some basic footer text. A simple controller is included that pulls the information from a database table (in their case a record of logins) and pushes this data into the PDF as lines of text.