chamilo / chamilo-lms

     * @param    int        session id

     * @return    float    Best average score

     */

    public static function get_best_average_score_by_exercise(

        $exercise_id,

        $courseId,

        $session_id,

        $user_count

    )

    {

        $user_results = Event::get_best_exercise_results_by_user(

            $exercise_id,

            $courseId,

            $session_id

        );

        $avg_score = 0;

        if (!empty($user_results)) {

            foreach ($user_results as $result) {

                if (!empty($result['exe_weighting']) && intval($result['exe_weighting']) != 0) {

                    $score = $result['exe_result'] / $result['exe_weighting'];

                    $avg_score += $score;

                }

            }

            //We asume that all exe_weighting

            //$avg_score = show_score( $avg_score / count($user_results) , $result['exe_weighting']);

            //$avg_score = ($avg_score / count($user_results));

            if (!empty($user_count)) {

                $avg_score = float_format($avg_score / $user_count, 1) * 100;

            } else {

                $avg_score = 0;

            }

        }

        return $avg_score;

    }

    /**

     * @param int $session_id

     * @return string

     */

    public static function get_exercise_student_average_best_attempt($exercise_list, $user_id, $courseId, $session_id)

    {

        $result = 0;

        if (!empty($exercise_list)) {

            foreach ($exercise_list as $exercise_data) {

                $exercise_id = $exercise_data['id'];

                $best_attempt = Event::get_best_attempt_exercise_results_per_user(

                    $user_id,

                    $exercise_id,

                    $courseId,

                    $session_id

                );

                if (!empty($best_attempt) && !empty($best_attempt['exe_weighting'])) {

                    $result += $best_attempt['exe_result']/$best_attempt['exe_weighting'];

                }

            }

            $result = $result / count($exercise_list);

            $result = round($result, 2) * 100;

        }

        return $result.'%';

    }

    /**

     * get teacher progress by course and session