syntax error, unexpected token "public", expecting end of file in your code on line 105

Level 1

''' <?php defined('MOODLE_INTERNAL') || die;

require_once($CFG->libdir . '/questionlib.php');

class qtype_random_quadratic extends question_type { public function name() { return 'random_quadratic'; }

public function save_question_options($question) {
    $question->options = json_encode($question->options);
    return true;
}

public function get_question_options(&$question) {
    $question->options = json_decode($question->options, true);
    return true;
}

public function extra_question_fields() {
    return array('a', 'b', 'c');
}

public function response_summary($question, $state, $length = 80) {
    return '';
}

public function is_usable_by_random() {
    return true;
}

public function can_regrade_response($question) {
    return false;
}

public function get_expected_data($question, $nameprefix) {
    return array();
}

public function get_actual_data($question, $nameprefix) {
    return array();
}

public function save_session_and_responses(&$question, &$state) {
    return true;
}

public function restore_session_and_responses(&$question, &$state) {
    return true;
}

public function get_question_edit_options_form_definition($question) {
    $mform = $this->create_question_edit_options_form($question);
    return $mform;
}

public function save_question_edit_options($question) {
    return $this->save_question_options($question);
}

public function get_question_options_form_definition($form, $question) {
    $this->add_per_question_fields($form->addElement('text', 'a', get_string('a', 'qtype_random_quadratic')));
    $this->add_per_question_fields($form->addElement('text', 'b', get_string('b', 'qtype_random_quadratic')));
    $this->add_per_question_fields($form->addElement('text', 'c', get_string('c', 'qtype_random_quadratic')));

    $form->addRule('a', null, 'required', null, 'client');
    $form->addRule('b', null, 'required', null, 'client');
    $form->addRule('c', null, 'required', null, 'client');
}

public function get_default_qt_options() {
    return array();
}

public function is_compatible($question) {
    return true;
}

public function get_question_preview($question, $state, $cmoptions, $options) {
    return '';
}

public function get_question_options_for_export($question) {
    return $question->options;
}

public function get_question_options_from_import($data) {
    return $data;
}

public function get_used_question_ids($questionids, $quiz) {
    return array();
}

public function has_additional_javascript() {
    return false;
}

public function start_attempt($question, $context, $state, $cmoptions) {
    return new qtype_random_quadratic_attempt($question, $state, $context);
}

}

public function print_question_formulation_and_controls($question, $state, $cmoptions, $options) {
global $OUTPUT;

$a = $question->options['a'];
$b = $question->options['b'];
$c = $question->options['c'];


$questiontext = "$a x^2 + $b x + $c = 0";


echo $OUTPUT->box_start('boxquestion');
echo $OUTPUT->heading(format_text($questiontext), 5, 'questiontext');
echo $OUTPUT->box_end();


echo $OUTPUT->hidden('answer', 0);
echo $OUTPUT->hidden('questionid', $question->id);

} public function grade_responses($question, $state, $cmoptions) { $raw_grade = $state->responses['answer']; $result = new StdClass; $result->fraction = ($raw_grade == 1) ? 1 : 0; $result->feedback = ''; return $result; }

public function get_correct_responses($question, $state) { return array('' => 1); }

public function response_summary_format() { return QUESTION_RESPONSE_SUMMARY_IGNORE; }

public function get_question_options($question) { $options = array(); $options['a'] = $question->a; $options['b'] = $question->b; $options['c'] = $question->c; return $options; } ?> ''''