%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
/* For licensing terms, see /license.txt */
namespace moodleexport;
use Exception;
use FillBlanks;
/**
* Class QuizExport.
*
* Handles the export of quizzes within a course.
*/
class QuizExport extends ActivityExport
{
/**
* Export a quiz to the specified directory.
*
* @param int $activityId The ID of the quiz.
* @param string $exportDir The directory where the quiz will be exported.
* @param int $moduleId The ID of the module.
* @param int $sectionId The ID of the section.
*/
public function export($activityId, $exportDir, $moduleId, $sectionId): void
{
// Prepare the directory where the quiz export will be saved
$quizDir = $this->prepareActivityDirectory($exportDir, 'quiz', $moduleId);
// Retrieve quiz data
$quizData = $this->getData($activityId, $sectionId);
// Generate XML files
$this->createQuizXml($quizData, $quizDir);
$this->createModuleXml($quizData, $quizDir);
$this->createGradesXml($quizData, $quizDir);
$this->createCompletionXml($quizData, $quizDir);
$this->createCommentsXml($quizData, $quizDir);
$this->createCompetenciesXml($quizData, $quizDir);
$this->createFiltersXml($quizData, $quizDir);
$this->createGradeHistoryXml($quizData, $quizDir);
$this->createInforefXml($quizData, $quizDir);
$this->createRolesXml($quizData, $quizDir);
$this->createCalendarXml($quizData, $quizDir);
}
/**
* Retrieves the quiz data.
*/
public function getData(int $quizId, int $sectionId): array
{
$quizResources = $this->course->resources[RESOURCE_QUIZ];
foreach ($quizResources as $quiz) {
if ($quiz->obj->iid == -1) {
continue;
}
if ($quiz->obj->iid == $quizId) {
$contextid = $quiz->obj->c_id;
return [
'id' => $quiz->obj->iid,
'name' => $quiz->obj->title,
'intro' => $quiz->obj->description,
'timeopen' => $quiz->obj->start_time ?? 0,
'timeclose' => $quiz->obj->end_time ?? 0,
'timelimit' => $quiz->obj->timelimit ?? 0,
'grademethod' => $quiz->obj->grademethod ?? 1,
'decimalpoints' => $quiz->obj->decimalpoints ?? 2,
'sumgrades' => $quiz->obj->sumgrades ?? 0,
'grade' => $quiz->obj->grade ?? 0,
'questionsperpage' => $quiz->obj->questionsperpage ?? 1,
'preferredbehaviour' => $quiz->obj->preferredbehaviour ?? 'deferredfeedback',
'shuffleanswers' => $quiz->obj->shuffleanswers ?? 1,
'questions' => $this->getQuestionsForQuiz($quizId),
'feedbacks' => $this->getFeedbacksForQuiz($quizId),
'sectionid' => $sectionId,
'moduleid' => $quiz->obj->iid ?? 0,
'modulename' => 'quiz',
'contextid' => $contextid,
'overduehandling' => $quiz->obj->overduehandling ?? 'autosubmit',
'graceperiod' => $quiz->obj->graceperiod ?? 0,
'canredoquestions' => $quiz->obj->canredoquestions ?? 0,
'attempts_number' => $quiz->obj->attempts_number ?? 0,
'attemptonlast' => $quiz->obj->attemptonlast ?? 0,
'questiondecimalpoints' => $quiz->obj->questiondecimalpoints ?? 2,
'reviewattempt' => $quiz->obj->reviewattempt ?? 0,
'reviewcorrectness' => $quiz->obj->reviewcorrectness ?? 0,
'reviewmarks' => $quiz->obj->reviewmarks ?? 0,
'reviewspecificfeedback' => $quiz->obj->reviewspecificfeedback ?? 0,
'reviewgeneralfeedback' => $quiz->obj->reviewgeneralfeedback ?? 0,
'reviewrightanswer' => $quiz->obj->reviewrightanswer ?? 0,
'reviewoverallfeedback' => $quiz->obj->reviewoverallfeedback ?? 0,
'timecreated' => $quiz->obj->insert_date ?? time(),
'timemodified' => $quiz->obj->lastedit_date ?? time(),
'password' => $quiz->obj->password ?? '',
'subnet' => $quiz->obj->subnet ?? '',
'browsersecurity' => $quiz->obj->browsersecurity ?? '-',
'delay1' => $quiz->obj->delay1 ?? 0,
'delay2' => $quiz->obj->delay2 ?? 0,
'showuserpicture' => $quiz->obj->showuserpicture ?? 0,
'showblocks' => $quiz->obj->showblocks ?? 0,
'completionattemptsexhausted' => $quiz->obj->completionattemptsexhausted ?? 0,
'completionpass' => $quiz->obj->completionpass ?? 0,
'completionminattempts' => $quiz->obj->completionminattempts ?? 0,
'allowofflineattempts' => $quiz->obj->allowofflineattempts ?? 0,
'users' => [],
'files' => [],
];
}
}
return [];
}
/**
* Exports a question in XML format.
*/
public function exportQuestion(array $question): string
{
$xmlContent = ' <question id="'.($question['id'] ?? '0').'">'.PHP_EOL;
$xmlContent .= ' <parent>0</parent>'.PHP_EOL;
$xmlContent .= ' <name>'.htmlspecialchars($question['questiontext'] ?? 'No question text').'</name>'.PHP_EOL;
$xmlContent .= ' <questiontext>'.htmlspecialchars($question['questiontext'] ?? 'No question text').'</questiontext>'.PHP_EOL;
$xmlContent .= ' <questiontextformat>1</questiontextformat>'.PHP_EOL;
$xmlContent .= ' <generalfeedback></generalfeedback>'.PHP_EOL;
$xmlContent .= ' <generalfeedbackformat>1</generalfeedbackformat>'.PHP_EOL;
$xmlContent .= ' <defaultmark>'.($question['maxmark'] ?? '0').'</defaultmark>'.PHP_EOL;
$xmlContent .= ' <penalty>0.3333333</penalty>'.PHP_EOL;
$xmlContent .= ' <qtype>'.htmlspecialchars(str_replace('_nosingle', '', $question['qtype']) ?? 'unknown').'</qtype>'.PHP_EOL;
$xmlContent .= ' <length>1</length>'.PHP_EOL;
$xmlContent .= ' <stamp>moodle+'.time().'+QUESTIONSTAMP</stamp>'.PHP_EOL;
$xmlContent .= ' <version>moodle+'.time().'+VERSIONSTAMP</version>'.PHP_EOL;
$xmlContent .= ' <hidden>0</hidden>'.PHP_EOL;
$xmlContent .= ' <timecreated>'.time().'</timecreated>'.PHP_EOL;
$xmlContent .= ' <timemodified>'.time().'</timemodified>'.PHP_EOL;
$xmlContent .= ' <createdby>2</createdby>'.PHP_EOL;
$xmlContent .= ' <modifiedby>2</modifiedby>'.PHP_EOL;
// Add question type-specific content
switch ($question['qtype']) {
case 'multichoice':
$xmlContent .= $this->exportMultichoiceQuestion($question);
break;
case 'multichoice_nosingle':
$xmlContent .= $this->exportMultichoiceNosingleQuestion($question);
break;
case 'truefalse':
$xmlContent .= $this->exportTrueFalseQuestion($question);
break;
case 'shortanswer':
$xmlContent .= $this->exportShortAnswerQuestion($question);
break;
case 'match':
$xmlContent .= $this->exportMatchQuestion($question);
break;
}
$xmlContent .= ' </question>'.PHP_EOL;
return $xmlContent;
}
/**
* Retrieves the questions for a specific quiz.
*/
private function getQuestionsForQuiz(int $quizId): array
{
$questions = [];
$quizResources = $this->course->resources[RESOURCE_QUIZQUESTION] ?? [];
foreach ($quizResources as $questionId => $questionData) {
if (in_array($questionId, $this->course->resources[RESOURCE_QUIZ][$quizId]->obj->question_ids)) {
$categoryId = $questionData->question_category ?? 0;
$categoryId = $categoryId > 0 ? $categoryId : $this->getDefaultCategoryId();
$questions[] = [
'id' => $questionData->source_id,
'questiontext' => $questionData->question,
'qtype' => $this->mapQuestionType($questionData->quiz_type),
'questioncategoryid' => $categoryId,
'answers' => $this->getAnswersForQuestion($questionData->source_id),
'maxmark' => $questionData->ponderation ?? 1,
];
}
}
return $questions;
}
/**
* Maps the quiz type code to a descriptive string.
*/
private function mapQuestionType(string $quizType): string
{
switch ($quizType) {
case UNIQUE_ANSWER: return 'multichoice';
case MULTIPLE_ANSWER: return 'multichoice_nosingle';
case FILL_IN_BLANKS: return 'match';
case FREE_ANSWER: return 'shortanswer';
case CALCULATED_ANSWER: return 'calculated';
case UPLOAD_ANSWER: return 'fileupload';
default: return 'unknown';
}
}
/**
* Retrieves the answers for a specific question ID.
*/
private function getAnswersForQuestion(int $questionId): array
{
static $globalCounter = 0;
$answers = [];
$quizResources = $this->course->resources[RESOURCE_QUIZQUESTION] ?? [];
foreach ($quizResources as $questionData) {
if ($questionData->source_id == $questionId) {
foreach ($questionData->answers as $answer) {
$globalCounter++;
$answers[] = [
'id' => $questionId * 1000 + $globalCounter,
'text' => $answer['answer'],
'fraction' => $answer['correct'] == '1' ? 100 : 0,
'feedback' => $answer['comment'],
];
}
}
}
return $answers;
}
/**
* Retrieves feedbacks for a specific quiz.
*/
private function getFeedbacksForQuiz(int $quizId): array
{
$feedbacks = [];
$quizResources = $this->course->resources[RESOURCE_QUIZ] ?? [];
foreach ($quizResources as $quiz) {
if ($quiz->obj->iid == $quizId) {
$feedbacks[] = [
'feedbacktext' => $quiz->obj->description ?? '',
'mingrade' => 0.00000,
'maxgrade' => $quiz->obj->grade ?? 10.00000,
];
}
}
return $feedbacks;
}
private function getDefaultCategoryId(): int
{
return 1;
}
/**
* Creates the quiz.xml file.
*/
private function createQuizXml(array $quizData, string $destinationDir): void
{
$xmlContent = '<?xml version="1.0" encoding="UTF-8"?>'.PHP_EOL;
$xmlContent .= '<activity id="'.$quizData['id'].'" moduleid="'.$quizData['moduleid'].'" modulename="quiz" contextid="'.$quizData['contextid'].'">'.PHP_EOL;
$xmlContent .= ' <quiz id="'.$quizData['id'].'">'.PHP_EOL;
$xmlContent .= ' <name>'.htmlspecialchars($quizData['name']).'</name>'.PHP_EOL;
$xmlContent .= ' <intro>'.htmlspecialchars($quizData['intro']).'</intro>'.PHP_EOL;
$xmlContent .= ' <introformat>1</introformat>'.PHP_EOL;
$xmlContent .= ' <timeopen>'.($quizData['timeopen'] ?? 0).'</timeopen>'.PHP_EOL;
$xmlContent .= ' <timeclose>'.($quizData['timeclose'] ?? 0).'</timeclose>'.PHP_EOL;
$xmlContent .= ' <timelimit>'.($quizData['timelimit'] ?? 0).'</timelimit>'.PHP_EOL;
$xmlContent .= ' <overduehandling>'.($quizData['overduehandling'] ?? 'autosubmit').'</overduehandling>'.PHP_EOL;
$xmlContent .= ' <graceperiod>'.($quizData['graceperiod'] ?? 0).'</graceperiod>'.PHP_EOL;
$xmlContent .= ' <preferredbehaviour>'.htmlspecialchars($quizData['preferredbehaviour']).'</preferredbehaviour>'.PHP_EOL;
$xmlContent .= ' <canredoquestions>'.($quizData['canredoquestions'] ?? 0).'</canredoquestions>'.PHP_EOL;
$xmlContent .= ' <attempts_number>'.($quizData['attempts_number'] ?? 0).'</attempts_number>'.PHP_EOL;
$xmlContent .= ' <attemptonlast>'.($quizData['attemptonlast'] ?? 0).'</attemptonlast>'.PHP_EOL;
$xmlContent .= ' <grademethod>'.$quizData['grademethod'].'</grademethod>'.PHP_EOL;
$xmlContent .= ' <decimalpoints>'.$quizData['decimalpoints'].'</decimalpoints>'.PHP_EOL;
$xmlContent .= ' <questiondecimalpoints>'.($quizData['questiondecimalpoints'] ?? -1).'</questiondecimalpoints>'.PHP_EOL;
// Review options
$xmlContent .= ' <reviewattempt>'.($quizData['reviewattempt'] ?? 69888).'</reviewattempt>'.PHP_EOL;
$xmlContent .= ' <reviewcorrectness>'.($quizData['reviewcorrectness'] ?? 4352).'</reviewcorrectness>'.PHP_EOL;
$xmlContent .= ' <reviewmarks>'.($quizData['reviewmarks'] ?? 4352).'</reviewmarks>'.PHP_EOL;
$xmlContent .= ' <reviewspecificfeedback>'.($quizData['reviewspecificfeedback'] ?? 4352).'</reviewspecificfeedback>'.PHP_EOL;
$xmlContent .= ' <reviewgeneralfeedback>'.($quizData['reviewgeneralfeedback'] ?? 4352).'</reviewgeneralfeedback>'.PHP_EOL;
$xmlContent .= ' <reviewrightanswer>'.($quizData['reviewrightanswer'] ?? 4352).'</reviewrightanswer>'.PHP_EOL;
$xmlContent .= ' <reviewoverallfeedback>'.($quizData['reviewoverallfeedback'] ?? 4352).'</reviewoverallfeedback>'.PHP_EOL;
// Navigation and presentation settings
$xmlContent .= ' <questionsperpage>'.$quizData['questionsperpage'].'</questionsperpage>'.PHP_EOL;
$xmlContent .= ' <navmethod>'.htmlspecialchars($quizData['navmethod']).'</navmethod>'.PHP_EOL;
$xmlContent .= ' <shuffleanswers>'.$quizData['shuffleanswers'].'</shuffleanswers>'.PHP_EOL;
$xmlContent .= ' <sumgrades>'.$quizData['sumgrades'].'</sumgrades>'.PHP_EOL;
$xmlContent .= ' <grade>'.$quizData['grade'].'</grade>'.PHP_EOL;
// Timing and security
$xmlContent .= ' <timecreated>'.($quizData['timecreated'] ?? time()).'</timecreated>'.PHP_EOL;
$xmlContent .= ' <timemodified>'.($quizData['timemodified'] ?? time()).'</timemodified>'.PHP_EOL;
$xmlContent .= ' <password>'.(isset($quizData['password']) ? htmlspecialchars($quizData['password']) : '').'</password>'.PHP_EOL;
$xmlContent .= ' <subnet>'.(isset($quizData['subnet']) ? htmlspecialchars($quizData['subnet']) : '').'</subnet>'.PHP_EOL;
$xmlContent .= ' <browsersecurity>'.(isset($quizData['browsersecurity']) ? htmlspecialchars($quizData['browsersecurity']) : '-').'</browsersecurity>'.PHP_EOL;
$xmlContent .= ' <delay1>'.($quizData['delay1'] ?? 0).'</delay1>'.PHP_EOL;
$xmlContent .= ' <delay2>'.($quizData['delay2'] ?? 0).'</delay2>'.PHP_EOL;
// Additional options
$xmlContent .= ' <showuserpicture>'.($quizData['showuserpicture'] ?? 0).'</showuserpicture>'.PHP_EOL;
$xmlContent .= ' <showblocks>'.($quizData['showblocks'] ?? 0).'</showblocks>'.PHP_EOL;
$xmlContent .= ' <completionattemptsexhausted>'.($quizData['completionattemptsexhausted'] ?? 0).'</completionattemptsexhausted>'.PHP_EOL;
$xmlContent .= ' <completionpass>'.($quizData['completionpass'] ?? 0).'</completionpass>'.PHP_EOL;
$xmlContent .= ' <completionminattempts>'.($quizData['completionminattempts'] ?? 0).'</completionminattempts>'.PHP_EOL;
$xmlContent .= ' <allowofflineattempts>'.($quizData['allowofflineattempts'] ?? 0).'</allowofflineattempts>'.PHP_EOL;
// Subplugin, if applicable
$xmlContent .= ' <subplugin_quizaccess_seb_quiz>'.PHP_EOL;
$xmlContent .= ' </subplugin_quizaccess_seb_quiz>'.PHP_EOL;
// Add question instances
$xmlContent .= ' <question_instances>'.PHP_EOL;
$slotIndex = 1;
foreach ($quizData['questions'] as $question) {
$xmlContent .= ' <question_instance id="'.$question['id'].'">'.PHP_EOL;
$xmlContent .= ' <slot>'.$slotIndex.'</slot>'.PHP_EOL;
$xmlContent .= ' <page>1</page>'.PHP_EOL;
$xmlContent .= ' <requireprevious>0</requireprevious>'.PHP_EOL;
$xmlContent .= ' <questionid>'.$question['id'].'</questionid>'.PHP_EOL;
$xmlContent .= ' <questioncategoryid>'.$question['questioncategoryid'].'</questioncategoryid>'.PHP_EOL;
$xmlContent .= ' <includingsubcategories>$@NULL@$</includingsubcategories>'.PHP_EOL;
$xmlContent .= ' <maxmark>'.$question['maxmark'].'</maxmark>'.PHP_EOL;
$xmlContent .= ' </question_instance>'.PHP_EOL;
$slotIndex++;
}
$xmlContent .= ' </question_instances>'.PHP_EOL;
// Quiz sections
$xmlContent .= ' <sections>'.PHP_EOL;
$xmlContent .= ' <section id="'.$quizData['id'].'">'.PHP_EOL;
$xmlContent .= ' <firstslot>1</firstslot>'.PHP_EOL;
$xmlContent .= ' <shufflequestions>0</shufflequestions>'.PHP_EOL;
$xmlContent .= ' </section>'.PHP_EOL;
$xmlContent .= ' </sections>'.PHP_EOL;
// Add feedbacks
$xmlContent .= ' <feedbacks>'.PHP_EOL;
foreach ($quizData['feedbacks'] as $feedback) {
$xmlContent .= ' <feedback id="'.$quizData['id'].'">'.PHP_EOL;
$xmlContent .= ' <feedbacktext>'.htmlspecialchars($feedback['feedbacktext']).'</feedbacktext>'.PHP_EOL;
$xmlContent .= ' <feedbacktextformat>1</feedbacktextformat>'.PHP_EOL;
$xmlContent .= ' <mingrade>'.$feedback['mingrade'].'</mingrade>'.PHP_EOL;
$xmlContent .= ' <maxgrade>'.$feedback['maxgrade'].'</maxgrade>'.PHP_EOL;
$xmlContent .= ' </feedback>'.PHP_EOL;
}
$xmlContent .= ' </feedbacks>'.PHP_EOL;
// Complete with placeholders for attempts and grades
$xmlContent .= ' <overrides>'.PHP_EOL.' </overrides>'.PHP_EOL;
$xmlContent .= ' <grades>'.PHP_EOL.' </grades>'.PHP_EOL;
$xmlContent .= ' <attempts>'.PHP_EOL.' </attempts>'.PHP_EOL;
// Close the activity tag
$xmlContent .= ' </quiz>'.PHP_EOL;
$xmlContent .= '</activity>'.PHP_EOL;
// Save the XML file
$xmlFile = $destinationDir.'/quiz.xml';
if (file_put_contents($xmlFile, $xmlContent) === false) {
throw new Exception(get_lang('ErrorCreatingQuizXml'));
}
}
/**
* Exports a multiple-choice question in XML format.
*/
private function exportMultichoiceQuestion(array $question): string
{
$xmlContent = ' <plugin_qtype_multichoice_question>'.PHP_EOL;
$xmlContent .= ' <answers>'.PHP_EOL;
foreach ($question['answers'] as $answer) {
$xmlContent .= $this->exportAnswer($answer);
}
$xmlContent .= ' </answers>'.PHP_EOL;
$xmlContent .= ' <multichoice id="'.($question['id'] ?? '0').'">'.PHP_EOL;
$xmlContent .= ' <layout>0</layout>'.PHP_EOL;
$xmlContent .= ' <single>1</single>'.PHP_EOL;
$xmlContent .= ' <shuffleanswers>1</shuffleanswers>'.PHP_EOL;
$xmlContent .= ' <correctfeedback>Your answer is correct.</correctfeedback>'.PHP_EOL;
$xmlContent .= ' <correctfeedbackformat>1</correctfeedbackformat>'.PHP_EOL;
$xmlContent .= ' <partiallycorrectfeedback>Your answer is partially correct.</partiallycorrectfeedback>'.PHP_EOL;
$xmlContent .= ' <partiallycorrectfeedbackformat>1</partiallycorrectfeedbackformat>'.PHP_EOL;
$xmlContent .= ' <incorrectfeedback>Your answer is incorrect.</incorrectfeedback>'.PHP_EOL;
$xmlContent .= ' <incorrectfeedbackformat>1</incorrectfeedbackformat>'.PHP_EOL;
$xmlContent .= ' <answernumbering>abc</answernumbering>'.PHP_EOL;
$xmlContent .= ' <shownumcorrect>1</shownumcorrect>'.PHP_EOL;
$xmlContent .= ' </multichoice>'.PHP_EOL;
$xmlContent .= ' </plugin_qtype_multichoice_question>'.PHP_EOL;
return $xmlContent;
}
/**
* Exports a multiple-choice question with single=0 in XML format.
*/
private function exportMultichoiceNosingleQuestion(array $question): string
{
// Similar structure to exportMultichoiceQuestion, but with single=0
$xmlContent = str_replace('<single>1</single>', '<single>0</single>', $this->exportMultichoiceQuestion($question));
return $xmlContent;
}
/**
* Exports a true/false question in XML format.
*/
private function exportTrueFalseQuestion(array $question): string
{
$xmlContent = ' <plugin_qtype_truefalse_question>'.PHP_EOL;
$xmlContent .= ' <answers>'.PHP_EOL;
foreach ($question['answers'] as $answer) {
$xmlContent .= $this->exportAnswer($answer);
}
$xmlContent .= ' </answers>'.PHP_EOL;
$xmlContent .= ' <truefalse id="'.($question['id'] ?? '0').'">'.PHP_EOL;
$trueId = $question['answers'][0]['id'] ?? 0;
$falseId = $question['answers'][1]['id'] ?? 0;
$xmlContent .= ' <trueanswer>'.$trueId.'</trueanswer>'.PHP_EOL;
$xmlContent .= ' <falseanswer>'.$falseId.'</falseanswer>'.PHP_EOL;
$xmlContent .= ' </truefalse>'.PHP_EOL;
$xmlContent .= ' </plugin_qtype_truefalse_question>'.PHP_EOL;
return $xmlContent;
}
/**
* Exports a short answer question in XML format.
*/
private function exportShortAnswerQuestion(array $question): string
{
$xmlContent = ' <plugin_qtype_shortanswer_question>'.PHP_EOL;
$xmlContent .= ' <answers>'.PHP_EOL;
foreach ($question['answers'] as $answer) {
$xmlContent .= $this->exportAnswer($answer);
}
$xmlContent .= ' </answers>'.PHP_EOL;
$xmlContent .= ' <shortanswer id="'.($question['id'] ?? '0').'">'.PHP_EOL;
$xmlContent .= ' <usecase>0</usecase>'.PHP_EOL;
$xmlContent .= ' </shortanswer>'.PHP_EOL;
$xmlContent .= ' </plugin_qtype_shortanswer_question>'.PHP_EOL;
return $xmlContent;
}
/**
* Exports a matching question in XML format.
*/
private function exportMatchQuestion(array $question): string
{
$xmlContent = ' <plugin_qtype_match_question>'.PHP_EOL;
$xmlContent .= ' <matchoptions id="'.htmlspecialchars($question['id'] ?? '0').'">'.PHP_EOL;
$xmlContent .= ' <shuffleanswers>1</shuffleanswers>'.PHP_EOL;
$xmlContent .= ' <correctfeedback>'.htmlspecialchars($question['correctfeedback'] ?? '').'</correctfeedback>'.PHP_EOL;
$xmlContent .= ' <correctfeedbackformat>0</correctfeedbackformat>'.PHP_EOL;
$xmlContent .= ' <partiallycorrectfeedback>'.htmlspecialchars($question['partiallycorrectfeedback'] ?? '').'</partiallycorrectfeedback>'.PHP_EOL;
$xmlContent .= ' <partiallycorrectfeedbackformat>0</partiallycorrectfeedbackformat>'.PHP_EOL;
$xmlContent .= ' <incorrectfeedback>'.htmlspecialchars($question['incorrectfeedback'] ?? '').'</incorrectfeedback>'.PHP_EOL;
$xmlContent .= ' <incorrectfeedbackformat>0</incorrectfeedbackformat>'.PHP_EOL;
$xmlContent .= ' <shownumcorrect>0</shownumcorrect>'.PHP_EOL;
$xmlContent .= ' </matchoptions>'.PHP_EOL;
$xmlContent .= ' <matches>'.PHP_EOL;
$res = FillBlanks::getAnswerInfo($question['answers'][0]['text']);
$words = $res['words'];
$common_words = $res['common_words'];
for ($i = 0; $i < count($common_words); $i++) {
$answer = htmlspecialchars(trim(strip_tags($common_words[$i])));
if (!empty(trim($answer))) {
$xmlContent .= ' <match id="'.($i + 1).'">'.PHP_EOL;
$xmlContent .= ' <questiontext>'.$answer.'</questiontext>'.PHP_EOL;
$xmlContent .= ' <questiontextformat>0</questiontextformat>'.PHP_EOL;
$xmlContent .= ' <answertext>'.htmlspecialchars(explode('|', $words[$i])[0]).'</answertext>'.PHP_EOL;
$xmlContent .= ' </match>'.PHP_EOL;
}
}
$xmlContent .= ' </matches>'.PHP_EOL;
$xmlContent .= ' </plugin_qtype_match_question>'.PHP_EOL;
return $xmlContent;
}
/**
* Exports an answer in XML format.
*/
private function exportAnswer(array $answer): string
{
return ' <answer id="'.($answer['id'] ?? '0').'">'.PHP_EOL.
' <answertext>'.htmlspecialchars($answer['text'] ?? 'No answer text').'</answertext>'.PHP_EOL.
' <answerformat>1</answerformat>'.PHP_EOL.
' <fraction>'.($answer['fraction'] ?? '0').'</fraction>'.PHP_EOL.
' <feedback>'.htmlspecialchars($answer['feedback'] ?? '').'</feedback>'.PHP_EOL.
' <feedbackformat>1</feedbackformat>'.PHP_EOL.
' </answer>'.PHP_EOL;
}
}
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