questiontype.php

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                            $chosenanswer = clone($answers[$response]);
                        }
                        break;
                    default:
                        break;
                }

                // Set up a default chosenanswer so that all non-empty wrong
                // answers are highlighted red
                if (empty($chosenanswer) && !empty($response)) {
                    $chosenanswer = new stdClass;
                    $chosenanswer->fraction = 0.0;
                }

                if (!empty($chosenanswer->feedback)) {
                    $feedback = s(str_replace(array("\\", "'"), array("\\\\", "\\'"), $feedback.$chosenanswer->feedback));
                    if  ($options->readonly && $options->correct_responses) {
                        $strfeedbackwrapped = get_string('correctanswerandfeedback', 'qtype_multianswer');
                    }else {
                        $strfeedbackwrapped = get_string('feedback', 'quiz');
                    }
                    $popup = " onmouseover=\"return overlib('$feedback', STICKY, MOUSEOFF, CAPTION, '$strfeedbackwrapped', FGCOLOR, '#FFFFFF');\" ".
                             " onmouseout=\"return nd();\" ";
                }

                /// Determine style
                if ($options->feedback && $response != '') {
                    $style = 'class = "'.question_get_feedback_class($chosenanswer->fraction).'"';
                    $feedbackimg = question_get_feedback_image($chosenanswer->fraction);
                } else {
                    $style = '';
                    $feedbackimg = '';
                }
            }
            if ($feedback !='' && $popup == ''){
                $strfeedbackwrapped = get_string('correctanswer', 'qtype_multianswer');
                    $feedback = s(str_replace(array("\\", "'"), array("\\\\", "\\'"), $feedback));
                    $popup = " onmouseover=\"return overlib('$feedback', STICKY, MOUSEOFF, CAPTION, '$strfeedbackwrapped', FGCOLOR, '#FFFFFF');\" ".
                             " onmouseout=\"return nd();\" ";
            }

            // Print the input control
            switch ($wrapped->qtype) {
                case 'shortanswer':
                case 'numerical':
                    $size = 1 ;
                    foreach ($answers as $answer) {
                        if (strlen(trim($answer->answer)) > $size ){
                            $size = strlen(trim($answer->answer));
                        }
                    }
                    if (strlen(trim($response))> $size ){
                            $size = strlen(trim($response))+1;
                    }
                    $size = $size + rand(0,$size*0.15);
                    $size > 60 ? $size = 60 : $size = $size;
                    $styleinfo = "size=\"$size\"";
                    /**
                    * Uncomment the following lines if you want to limit for small sizes.
                    * Results may vary with browsers see MDL-3274
                    */
                    /*
                    if ($size < 2) {
                        $styleinfo = 'style="width: 1.1em;"';
                    }
                    if ($size == 2) {
                        $styleinfo = 'style="width: 1.9em;"';
                    }
                    if ($size == 3) {
                        $styleinfo = 'style="width: 2.3em;"';
                    }
                    if ($size == 4) {
                        $styleinfo = 'style="width: 2.8em;"';
                    }
                    */

                    echo "<input $style $readonly $popup name=\"$inputname\"";
                    echo "  type=\"text\" value=\"".s($response, true)."\" ".$styleinfo." /> ";
                    if (!empty($feedback) && !empty($USER->screenreader)) {
                        echo "<img src=\"$CFG->pixpath/i/feedback.gif\" alt=\"$feedback\" />";
                    }
                    echo $feedbackimg;
                    break;
                case 'multichoice':
                 if ($wrapped->options->layout == 0 ){
                    $outputoptions = '<option></option>'; // Default empty option
                    foreach ($answers as $mcanswer) {
                        $selected = '';
                        if ($response == $mcanswer->id) {
                            $selected = ' selected="selected"';
                        }
                        $outputoptions .= "<option value=\"$mcanswer->id\"$selected>" .
                                s($mcanswer->answer, true) . '</option>';
                    }
                    // In the next line, $readonly is invalid HTML, but it works in
                    // all browsers. $disabled would be valid, but then the JS for
                    // displaying the feedback does not work. Of course, we should
                    // not be relying on JS (for accessibility reasons), but that is
                    // a bigger problem.
                    //
                    // The span is used for safari, which does not allow styling of
                    // selects.
                    echo "<span $style><select $popup $readonly $style name=\"$inputname\">";
                    echo $outputoptions;
                    echo '</select></span>';
                    if (!empty($feedback) && !empty($USER->screenreader)) {
                        echo "<img src=\"$CFG->pixpath/i/feedback.gif\" alt=\"$feedback\" />";
                    }
                    echo $feedbackimg;
                    }else if ($wrapped->options->layout == 1 || $wrapped->options->layout == 2){
                        $ordernumber=0;
                        $anss =  Array();
                        foreach ($answers as $mcanswer) {
                            $ordernumber++;
                            $checked = '';
                            $chosen = false;
                            $type = 'type="radio"';
                            $name   = "name=\"{$inputname}\"";
                            if ($response == $mcanswer->id) {
                                $checked = 'checked="checked"';
                                $chosen = true;
                            }
                            $a = new stdClass;
                            $a->id   = $question->name_prefix . $mcanswer->id;
                            $a->class = '';
                            $a->feedbackimg = '';
        
                    // Print the control
                    $a->control = "<input $readonly id=\"$a->id\" $name $checked $type value=\"$mcanswer->id\" />";
                if ($options->correct_responses && $mcanswer->fraction > 0) {
                    $a->class = question_get_feedback_class(1);
                }
                if (($options->feedback && $chosen) || $options->correct_responses) {
                    if ($type == ' type="checkbox" ') {
                        $a->feedbackimg = question_get_feedback_image($mcanswer->fraction > 0 ? 1 : 0, $chosen && $options->feedback);
                    } else {
                        $a->feedbackimg = question_get_feedback_image($mcanswer->fraction, $chosen && $options->feedback);
                    }
                }
    
                // Print the answer text: no automatic numbering

                $a->text =format_text($mcanswer->answer, FORMAT_MOODLE, $formatoptions, $cmoptions->course);
    
                // Print feedback if feedback is on
                if (($options->feedback || $options->correct_responses) && ($checked )) { //|| $options->readonly
                    $a->feedback = format_text($mcanswer->feedback, true, $formatoptions, $cmoptions->course);
                } else {
                    $a->feedback = '';
                }
    
                    $anss[] = clone($a);
                }
                ?>
            <?php    if ($wrapped->options->layout == 1 ){
            ?>
                  <table class="answer">
                    <?php $row = 1; foreach ($anss as $answer) { ?>
                      <tr class="<?php echo 'r'.$row = $row ? 0 : 1; ?>">
                        <td class="c0 control">
                          <?php echo $answer->control; ?>
                        </td>
                        <td class="c1 text <?php echo $answer->class ?>">
                          <label for="<?php echo $answer->id ?>">
                            <?php echo $answer->text; ?>
                            <?php echo $answer->feedbackimg; ?>
                          </label>
                        </td>
                        <td class="c0 feedback">
                          <?php echo $answer->feedback; ?>
                        </td>
                      </tr>
                    <?php } ?>
                  </table>
                  <?php }else  if ($wrapped->options->layout == 2 ){
                    ?>
           
                  <table class="answer">
                      <tr class="<?php echo 'r'.$row = $row ? 0 : 1; ?>">
                    <?php $row = 1; foreach ($anss as $answer) { ?>
                        <td class="c0 control">
                          <?php echo $answer->control; ?>
                        </td>
                        <td class="c1 text <?php echo $answer->class ?>">
                          <label for="<?php echo $answer->id ?>">
                            <?php echo $answer->text; ?>
                            <?php echo $answer->feedbackimg; ?>
                          </label>
                        </td>
                        <td class="c0 feedback">
                          <?php echo $answer->feedback; ?>
                        </td>
                    <?php } ?>
                      </tr>
                  </table>
                  <?php }  
                        
                    }else {
                        echo "no valid layout";
                    }
                    
                    break;
                default:
                    $a = new stdClass;
                    $a->type = $wrapped->qtype ; 
                    $a->sub = $positionkey;
                    print_error('unknownquestiontypeofsubquestion', 'qtype_multianswer','',$a);
                    break;
           }
           echo "</label>"; // MDL-7497
        }
        else {
            if(!  isset($question->options->questions[$positionkey])){
                echo $regs[0]."</label>";
            }else {
                echo '</label><div class="error" >'.get_string('questionnotfound','qtype_multianswer',$positionkey).'</div>';
            }
       }
    }

        // Print the final piece of question text:
        echo $qtextremaining;
        $this->print_question_submit_buttons($question, $state, $cmoptions, $options);
        echo '</div>';
    }

    function grade_responses(&$question, &$state, $cmoptions) {
        global $QTYPES;
        $teststate = clone($state);
        $state->raw_grade = 0;
        foreach($question->options->questions as $key => $wrapped) {
            if (!empty($wrapped)){
            $state->responses[$key] = $state->responses[$key];
            $teststate->responses = array('' => $state->responses[$key]);
            $teststate->raw_grade = 0;
            if (false === $QTYPES[$wrapped->qtype]
             ->grade_responses($wrapped, $teststate, $cmoptions)) {
                return false;
            }
            $state->raw_grade += $teststate->raw_grade;
        }
        }
        $state->raw_grade /= $question->defaultgrade;
        $state->raw_grade = min(max((float) $state->raw_grade, 0.0), 1.0)
         * $question->maxgrade;

        if (empty($state->raw_grade)) {
            $state->raw_grade = 0.0;
        }
        $state->penalty = $question->penalty * $question->maxgrade;

        // mark the state as graded
        $state->event = ($state->event ==  QUESTION_EVENTCLOSE) ? QUESTION_EVENTCLOSEANDGRADE : QUESTION_EVENTGRADE;

        return true;
    }

    function get_actual_response($question, $state) {
        global $QTYPES;
        $teststate = clone($state);
        foreach($question->options->questions as $key => $wrapped) {
            $state->responses[$key] = html_entity_decode($state->responses[$key]);
            $teststate->responses = array('' => $state->responses[$key]);
            $correct = $QTYPES[$wrapped->qtype]
             ->get_actual_response($wrapped, $teststate);
            // change separator here if you want
            $responsesseparator = ',';
            $responses[$key] = implode($responsesseparator, $correct);
        }
        return $responses;
    }

/// BACKUP FUNCTIONS ////////////////////////////

    /*
     * Backup the data in the question
     *
     * This is used in question/backuplib.php
     */
    function backup($bf,$preferences,$question,$level=6) {

        $status = true;

        $multianswers = get_records("question_multianswer","question",$question,"id");
        //If there are multianswers
        if ($multianswers) {
            //Print multianswers header
            $status = fwrite ($bf,start_tag("MULTIANSWERS",$level,true));
            //Iterate over each multianswer
            foreach ($multianswers as $multianswer) {
                $status = fwrite ($bf,start_tag("MULTIANSWER",$level+1,true));
                //Print multianswer contents
                fwrite ($bf,full_tag("ID",$level+2,false,$multianswer->id));
                fwrite ($bf,full_tag("QUESTION",$level+2,false,$multianswer->question));
                fwrite ($bf,full_tag("SEQUENCE",$level+2,false,$multianswer->sequence));
                $status = fwrite ($bf,end_tag("MULTIANSWER",$level+1,true));
            }
            //Print multianswers footer
            $status = fwrite ($bf,end_tag("MULTIANSWERS",$level,true));
            //Now print question_answers
            $status = question_backup_answers($bf,$preferences,$question);
        }
        return $status;
    }

/// RESTORE FUNCTIONS /////////////////

    /*
     * Restores the data in the question
     *
     * This is used in question/restorelib.php
     */
    function restore($old_question_id,$new_question_id,$info,$restore) {

        $status = true;

        //Get the multianswers array
        $multianswers = $info['#']['MULTIANSWERS']['0']['#']['MULTIANSWER'];
        //Iterate over multianswers
        for($i = 0; $i < sizeof($multianswers); $i++) {
            $mul_info = $multianswers[$i];

            //We need this later
            $oldid = backup_todb($mul_info['#']['ID']['0']['#']);

            //Now, build the question_multianswer record structure
            $multianswer = new stdClass;
            $multianswer->question = $new_question_id;
            $multianswer->sequence = backup_todb($mul_info['#']['SEQUENCE']['0']['#']);

            //We have to recode the sequence field (a list of question ids)
            //Extracts question id from sequence
            $sequence_field = "";
            $in_first = true;
            $tok = strtok($multianswer->sequence,",");
            while ($tok) {
                //Get the answer from backup_ids
                $question = backup_getid($restore->backup_unique_code,"question",$tok);