$name = $question->name;
$name = iconv("UTF-8", "GBK", $name);
$path = "C:/wamp/www/moodle/question/type/fillblank/questiontext/$name.txt";
$result = strip_tags($question->questiontext);
file_put_contents("C:/wamp/www/moodle/question/type/fillblank/questiontext/$name.txt", $result);