symbol !== '' && !$this->items) : ?>
symbol !== '') : ?>

: symbol, ENT_QUOTES, 'UTF-8'); ?>

items as $number => $item) : ?>

question; ?>

image) : ?>

: time_limit; ?> s | : points; ?>

question_type === 'open') : ?>
  1. answer_a; ?>
  2. answer_b; ?>
  3. answer_c; ?>
  4. answer_d; ?>