I don't understand from the article in what folder do I have to put the php files
Here in the code you see it.
You can set the include path to the folder where you saved your files, without the setting of the include path just enter the correct folder into the "require_once"-statement.
Code:
// Include files outside of webrootset_include_path('/var/www/surveys/test-survey');// Fetch database credentialsrequire_once('constant.php');// Connect to database and perform queryrequire_once('database.php');
