If you're referring to the functions in qa-app-posts.php, it takes care of all SQL escaping for you. Pass in the real data.
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.