/** * Fetches Class in which a student Studied the given Subject. * A student may have studied a Subject more than Once but in Different classes. Ex - Detained Student. * @param int $subject_id * @return array|false (if a student never studied the subject -false- is returned, * else an Array containing Ids of all Classes in which a Student studied the Subject is returned) */ public function fetchSubjectClass($subject_id) { $member_id = $this->getMember_id(true); $student_subject_object = new Acad_Model_StudentSubject(); $student_subject_object->setMember_id($member_id); $student_subject_object->setSubject_id($subject_id); return $student_subject_object->fetchClassIds(); }