get-course-sections.php

public function get_course_sections()
  {
    global $DB;

    $table = 'course_sections';
    $condition ='section IS NOT NULL AND sequence != ""';
    $params = ['course' => $this->course->id];
    $asections = $DB->get_records_select($table, $condition, $params);

    $modinfo = get_fast_modinfo($this->course, $this->user);
    $sections = $modinfo->get_sections();
    // return $sections or $asections
    return $sections;
  }