Thank you for the reply. I need to have a json with the set of questions and answers but also of the conditions applied to questions that make them visible or not.
I would like to make a graph of the questionnaire. So do not just questions and answers are necessary but also know any "jumps" between the request and the other. Thank you
I would look for the URL that is called to export a LSS inside the admin interface, then I would choose between Ajax or Curl depending on my needs/server configuration, then would choose a way to deal with authentication question reading the Yii documentation...