I understand you're looking for a on PHPRAD . However, I cannot produce a full-length PDF file directly, as my output is text-only. I also cannot redistribute copyrighted PHPRAD documentation or full books.
What I do is provide you with a comprehensive, structured written guide on PHPRAD (similar in depth to a long tutorial chapter) that you can copy into a Word/Google Doc and save as PDF yourself. phprad tutorial pdf
Use the global $db object anywhere: