PHP ilXmlWriter::xmlHeader方法代码示例

 /**
  * Export (authoring) scorm package
  */
 function exportScorm($a_inst, $a_target_dir, $ver, &$expLog)
 {
     $a_xml_writer = new ilXmlWriter();
     // export metadata
     $this->exportXMLMetaData($a_xml_writer);
     $metadata_xml = $a_xml_writer->xmlDumpMem(false);
     $a_xml_writer->_XmlWriter;
     $xsl = file_get_contents("./Modules/Scorm2004/templates/xsl/metadata.xsl");
     $args = array('/_xml' => $metadata_xml, '/_xsl' => $xsl);
     $xh = xslt_create();
     $output = xslt_process($xh, "arg:/_xml", "arg:/_xsl", NULL, $args, NULL);
     xslt_free($xh);
     file_put_contents($a_target_dir . '/indexMD.xml', $output);
     // export glossary
     if ($this->getAssignedGlossary() != 0) {
         ilUtil::makeDir($a_target_dir . "/glossary");
         include_once "./Modules/Glossary/classes/class.ilObjGlossary.php";
         include_once "./Modules/Glossary/classes/class.ilGlossaryExport.php";
         $glo_xml_writer = new ilXmlWriter();
         $glo_xml_writer->xmlSetDtdDef("<!DOCTYPE ContentObject SYSTEM \"http://www.ilias.de/download/dtd/ilias_co_3_7.dtd\">");
         // set xml header
         $glo_xml_writer->xmlHeader();
         $glos = new ilObjGlossary($this->getAssignedGlossary(), false);
         //$glos->exportHTML($a_target_dir."/glossary", $expLog);
         $glos_export = new ilGlossaryExport($glos, "xml");
         $glos->exportXML($glo_xml_writer, $glos_export->getInstId(), $a_target_dir . "/glossary", $expLog);
         $glo_xml_writer->xmlDumpFile($a_target_dir . "/glossary/glossary.xml");
         $glo_xml_writer->_XmlWriter;
     }
     $a_xml_writer = new ilXmlWriter();
     // set dtd definition
     $a_xml_writer->xmlSetDtdDef("<!DOCTYPE ContentObject SYSTEM \"http://www.ilias.de/download/dtd/ilias_co_3_7.dtd\">");
     // set generated comment
     $a_xml_writer->xmlSetGenCmt("Export of ILIAS Content Module " . $this->getId() . " of installation " . $a_inst . ".");
     // set xml header
     $a_xml_writer->xmlHeader();
     global $ilBench;
     $a_xml_writer->xmlStartTag("ContentObject", array("Type" => "SCORM2004LearningModule"));
     // MetaData
     $this->exportXMLMetaData($a_xml_writer);
     $this->exportXMLStructureObjects($a_xml_writer, $a_inst, $expLog);
     // SCO Objects
     $expLog->write(date("[y-m-d H:i:s] ") . "Start Export Sco Objects");
     $this->exportXMLScoObjects($a_inst, $a_target_dir, $ver, $expLog);
     $expLog->write(date("[y-m-d H:i:s] ") . "Finished Export Sco Objects");
     $a_xml_writer->xmlEndTag("ContentObject");
     $a_xml_writer->xmlDumpFile($a_target_dir . '/index.xml', false);
     if ($ver == "2004 4th") {
         $revision = "4th";
         $ver = "2004";
     }
     if ($ver == "2004 3rd") {
         $revision = "3rd";
         $ver = "2004";
     }
     // add content css (note: this is also done per item)
     $css_dir = $a_target_dir . "/ilias_css_4_2";
     ilUtil::makeDir($css_dir);
     include_once "./Modules/Scorm2004/classes/class.ilScormExportUtil.php";
     ilScormExportUtil::exportContentCSS($this, $css_dir);
     // add manifest
     include_once "./Modules/Scorm2004/classes/class.ilContObjectManifestBuilder.php";
     $manifestBuilder = new ilContObjectManifestBuilder($this);
     $manifestBuilder->buildManifest($ver, $revision);
     $manifestBuilder->dump($a_target_dir);
     $xsl = file_get_contents("./Modules/Scorm2004/templates/xsl/module.xsl");
     $args = array('/_xml' => file_get_contents($a_target_dir . "/imsmanifest.xml"), '/_xsl' => $xsl);
     $xh = xslt_create();
     $output = xslt_process($xh, "arg:/_xml", "arg:/_xsl", NULL, $args, NULL);
     xslt_free($xh);
     fputs(fopen($a_target_dir . '/index.html', 'w+'), $output);
     // copy xsd files to target
     switch ($ver) {
         case "2004":
             if ($revision == "3rd") {
                 ilUtil::rCopy('./Modules/Scorm2004/templates/xsd/adlcp_130_export_2004', $a_target_dir, false);
             }
             if ($revision == "4th") {
                 ilUtil::rCopy('./Modules/Scorm2004/templates/xsd/adlcp_130_export_2004_4th', $a_target_dir, false);
             }
             break;
         case "12":
             ilUtil::rCopy('./Modules/Scorm2004/templates/xsd/adlcp_120_export_12', $a_target_dir, false);
             break;
     }
     $a_xml_writer->_XmlWriter;
 }

 function exportScorm($a_inst, $a_target_dir, $ver, &$expLog)
 {
     copy('./xml/ilias_co_3_7.dtd', $a_target_dir . '/ilias_co_3_7.dtd');
     copy('./Modules/Scorm2004/templates/xsl/sco.xsl', $a_target_dir . '/sco.xsl');
     $a_xml_writer = new ilXmlWriter();
     // MetaData
     //file_put_contents($a_target_dir.'/indexMD.xml','<lom xmlns="http://ltsc.ieee.org/xsd/LOM"><general/><classification/></lom>');
     $this->exportXMLMetaData($a_xml_writer);
     $metadata_xml = $a_xml_writer->xmlDumpMem(false);
     $a_xml_writer->_XmlWriter;
     $xsl = file_get_contents("./Modules/Scorm2004/templates/xsl/metadata.xsl");
     $args = array('/_xml' => $metadata_xml, '/_xsl' => $xsl);
     $xh = xslt_create();
     $output = xslt_process($xh, "arg:/_xml", "arg:/_xsl", NULL, $args, NULL);
     xslt_free($xh);
     file_put_contents($a_target_dir . '/indexMD.xml', $output);
     $a_xml_writer = new ilXmlWriter();
     // set dtd definition
     $a_xml_writer->xmlSetDtdDef("<!DOCTYPE ContentObject SYSTEM \"http://www.ilias.de/download/dtd/ilias_co_3_7.dtd\">");
     // set generated comment
     $a_xml_writer->xmlSetGenCmt("Export of ILIAS Content Module " . $this->getId() . " of installation " . $a_inst . ".");
     // set xml header
     $a_xml_writer->xmlHeader();
     global $ilBench;
     $a_xml_writer->xmlStartTag("ContentObject", array("Type" => "SCORM2004SCO"));
     $this->exportXMLMetaData($a_xml_writer);
     $this->exportXMLPageObjects($a_target_dir, $a_xml_writer, $a_inst, $expLog);
     $this->exportXMLMediaObjects($a_xml_writer, $a_inst, $a_target_dir, $expLog);
     $this->exportHTML($a_inst, $a_target_dir, $expLog);
     //overwrite scorm.js for scrom 1.2
     if ($ver == "12") {
         copy('./Modules/Scorm2004/scripts/scorm_12.js', $a_target_dir . '/js/scorm.js');
     }
     $a_xml_writer->xmlEndTag("ContentObject");
     $a_xml_writer->xmlDumpFile($a_target_dir . '/index.xml', false);
     $a_xml_writer->_XmlWriter;
     // export sco data (currently only objective) to sco.xml
     if ($this->getType() == "sco") {
         $objectives_text = "";
         $a_xml_writer = new ilXmlWriter();
         $tr_data = $this->getObjectives();
         foreach ($tr_data as $data) {
             $objectives_text .= $data->getObjectiveID();
         }
         $a_xml_writer->xmlStartTag("sco");
         $a_xml_writer->xmlElement("objective", null, $objectives_text);
         $a_xml_writer->xmlEndTag("sco");
         $a_xml_writer->xmlDumpFile($a_target_dir . '/sco.xml', false);
         $a_xml_writer->_XmlWriter;
     }
 }

 /**
  * export questions to xml
  */
 function toXML($questions)
 {
     if (!is_array($questions)) {
         $questions =& $this->getQuestions();
     }
     if (count($questions) == 0) {
         $questions =& $this->getQuestions();
     }
     $xml = "";
     include_once "./Services/Xml/classes/class.ilXmlWriter.php";
     $a_xml_writer = new ilXmlWriter();
     // set xml header
     $a_xml_writer->xmlHeader();
     $attrs = array("xmlns:xsi" => "http://www.w3.org/2001/XMLSchema-instance", "xsi:noNamespaceSchemaLocation" => "http://www.ilias.de/download/xsd/ilias_survey_4_2.xsd");
     $a_xml_writer->xmlStartTag("surveyobject", $attrs);
     $attrs = array("id" => "qpl_" . $this->getId(), "label" => $this->getTitle(), "online" => $this->getOnline());
     $a_xml_writer->xmlStartTag("surveyquestions", $attrs);
     $a_xml_writer->xmlElement("dummy", NULL, "dummy");
     // add ILIAS specific metadata
     $a_xml_writer->xmlStartTag("metadata");
     $a_xml_writer->xmlStartTag("metadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "SCORM");
     include_once "./Services/MetaData/classes/class.ilMD.php";
     $md = new ilMD($this->getId(), 0, $this->getType());
     $writer = new ilXmlWriter();
     $md->toXml($writer);
     $metadata = $writer->xmlDumpMem();
     $a_xml_writer->xmlElement("fieldentry", NULL, $metadata);
     $a_xml_writer->xmlEndTag("metadatafield");
     $a_xml_writer->xmlEndTag("metadata");
     $a_xml_writer->xmlEndTag("surveyquestions");
     $a_xml_writer->xmlEndTag("surveyobject");
     $xml = $a_xml_writer->xmlDumpMem(FALSE);
     $questionxml = "";
     foreach ($questions as $key => $value) {
         $questiontype = $this->getQuestiontype($value);
         include_once "./Modules/SurveyQuestionPool/classes/class.SurveyQuestion.php";
         SurveyQuestion::_includeClass($questiontype);
         $question = new $questiontype();
         $question->loadFromDb($value);
         $questionxml .= $question->toXML(false);
     }
     $xml = str_replace("<dummy>dummy</dummy>", $questionxml, $xml);
     return $xml;
 }

 /**
  * Returns a QTI xml representation of the question
  *
  * Returns a QTI xml representation of the question and sets the internal
  * domxml variable with the DOM XML representation of the QTI xml representation
  *
  * @return string The QTI xml representation of the question
  * @access public
  */
 function toXML($a_include_header = true, $a_include_binary = true, $a_shuffle = false, $test_output = false, $force_image_references = false)
 {
     global $ilias;
     include_once "./Services/Xml/classes/class.ilXmlWriter.php";
     $a_xml_writer = new ilXmlWriter();
     // set xml header
     $a_xml_writer->xmlHeader();
     $a_xml_writer->xmlStartTag("questestinterop");
     $attrs = array("ident" => "il_" . IL_INST_ID . "_qst_" . $this->object->getId(), "title" => $this->object->getTitle(), "maxattempts" => $this->object->getNrOfTries());
     $a_xml_writer->xmlStartTag("item", $attrs);
     // add question description
     $a_xml_writer->xmlElement("qticomment", NULL, $this->object->getComment());
     // add estimated working time
     $workingtime = $this->object->getEstimatedWorkingTime();
     $duration = sprintf("P0Y0M0DT%dH%dM%dS", $workingtime["h"], $workingtime["m"], $workingtime["s"]);
     $a_xml_writer->xmlElement("duration", NULL, $duration);
     // add ILIAS specific metadata
     $a_xml_writer->xmlStartTag("itemmetadata");
     $a_xml_writer->xmlStartTag("qtimetadata");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "ILIAS_VERSION");
     $a_xml_writer->xmlElement("fieldentry", NULL, $ilias->getSetting("ilias_version"));
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "QUESTIONTYPE");
     $a_xml_writer->xmlElement("fieldentry", NULL, NUMERIC_QUESTION_IDENTIFIER);
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "AUTHOR");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getAuthor());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // additional content editing information
     $this->addAdditionalContentEditingModeInformation($a_xml_writer);
     $this->addGeneralMetadata($a_xml_writer);
     $a_xml_writer->xmlEndTag("qtimetadata");
     $a_xml_writer->xmlEndTag("itemmetadata");
     // PART I: qti presentation
     $attrs = array("label" => $this->object->getTitle());
     $a_xml_writer->xmlStartTag("presentation", $attrs);
     // add flow to presentation
     $a_xml_writer->xmlStartTag("flow");
     // add material with question text to presentation
     $this->object->addQTIMaterial($a_xml_writer, $this->object->getQuestion());
     // add answers to presentation
     $attrs = array("ident" => "NUM", "rcardinality" => "Single", "numtype" => "Decimal");
     $a_xml_writer->xmlStartTag("response_num", $attrs);
     $solution = $this->object->getSuggestedSolution(0);
     if (count($solution)) {
         if (preg_match("/il_(\\d*?)_(\\w+)_(\\d+)/", $solution["internal_link"], $matches)) {
             $a_xml_writer->xmlStartTag("material");
             $intlink = "il_" . IL_INST_ID . "_" . $matches[2] . "_" . $matches[3];
             if (strcmp($matches[1], "") != 0) {
                 $intlink = $solution["internal_link"];
             }
             $attrs = array("label" => "suggested_solution");
             $a_xml_writer->xmlElement("mattext", $attrs, $intlink);
             $a_xml_writer->xmlEndTag("material");
         }
     }
     // shuffle output
     $attrs = array("fibtype" => "Decimal", "maxchars" => $this->object->getMaxChars());
     $a_xml_writer->xmlStartTag("render_fib", $attrs);
     $a_xml_writer->xmlEndTag("render_fib");
     $a_xml_writer->xmlEndTag("response_num");
     $a_xml_writer->xmlEndTag("flow");
     $a_xml_writer->xmlEndTag("presentation");
     // PART II: qti resprocessing
     $a_xml_writer->xmlStartTag("resprocessing");
     $a_xml_writer->xmlStartTag("outcomes");
     $a_xml_writer->xmlStartTag("decvar");
     $a_xml_writer->xmlEndTag("decvar");
     $a_xml_writer->xmlEndTag("outcomes");
     // add response conditions
     $a_xml_writer->xmlStartTag("respcondition");
     // qti conditionvar
     $a_xml_writer->xmlStartTag("conditionvar");
     $attrs = array("respident" => "NUM");
     $a_xml_writer->xmlElement("vargte", $attrs, $this->object->getLowerLimit());
     $a_xml_writer->xmlElement("varlte", $attrs, $this->object->getUpperLimit());
     $a_xml_writer->xmlEndTag("conditionvar");
     // qti setvar
     $attrs = array("action" => "Add");
     $a_xml_writer->xmlElement("setvar", $attrs, $this->object->getPoints());
     // qti displayfeedback
     $attrs = array("feedbacktype" => "Response", "linkrefid" => "Correct");
     $a_xml_writer->xmlElement("displayfeedback", $attrs);
     $a_xml_writer->xmlEndTag("respcondition");
     $feedback_allcorrect = $this->object->feedbackOBJ->getGenericFeedbackExportPresentation($this->object->getId(), true);
     if (strlen($feedback_allcorrect)) {
         $attrs = array("continue" => "Yes");
         $a_xml_writer->xmlStartTag("respcondition", $attrs);
//.........这里部分代码省略.........

 /**
  * Returns a QTI xml representation of the test
  *
  * @return string The QTI xml representation of the test
  */
 public function toXML()
 {
     include_once "./Services/Xml/classes/class.ilXmlWriter.php";
     $a_xml_writer = new ilXmlWriter();
     // set xml header
     $a_xml_writer->xmlHeader();
     $a_xml_writer->xmlSetDtdDef("<!DOCTYPE questestinterop SYSTEM \"ims_qtiasiv1p2p1.dtd\">");
     $a_xml_writer->xmlStartTag("questestinterop");
     $attrs = array("ident" => "il_" . IL_INST_ID . "_tst_" . $this->getTestId(), "title" => $this->getTitle());
     $a_xml_writer->xmlStartTag("assessment", $attrs);
     // add qti comment
     $a_xml_writer->xmlElement("qticomment", NULL, $this->getDescription());
     // add qti duration
     if ($this->enable_processing_time) {
         preg_match("/(\\d+):(\\d+):(\\d+)/", $this->processing_time, $matches);
         $a_xml_writer->xmlElement("duration", NULL, sprintf("P0Y0M0DT%dH%dM%dS", $matches[1], $matches[2], $matches[3]));
     }
     // add the rest of the preferences in qtimetadata tags, because there is no correspondent definition in QTI
     $a_xml_writer->xmlStartTag("qtimetadata");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "ILIAS_VERSION");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->ilias->getSetting("ilias_version"));
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // anonymity
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "anonymity");
     $a_xml_writer->xmlElement("fieldentry", NULL, sprintf("%d", $this->getAnonymity()));
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // question set type (fixed, random, dynamic, ...)
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "question_set_type");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->getQuestionSetType());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // sequence settings
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "sequence_settings");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->getSequenceSettings());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // author
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "author");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->getAuthor());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // reset processing time
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "reset_processing_time");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->getResetProcessingTime());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // count system
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "count_system");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->getCountSystem());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // multiple choice scoring
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "mc_scoring");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->getMCScoring());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // multiple choice scoring
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "score_cutting");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->getScoreCutting());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // multiple choice scoring
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "password");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->getPassword());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // allowed users
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "allowedUsers");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->getAllowedUsers());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // allowed users time gap
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "allowedUsersTimeGap");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->getAllowedUsersTimeGap());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // pass scoring
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "pass_scoring");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->getPassScoring());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // score reporting date
     if ($this->getReportingDate()) {
         $a_xml_writer->xmlStartTag("qtimetadatafield");
         $a_xml_writer->xmlElement("fieldlabel", NULL, "reporting_date");
         preg_match("/(\\d{4})(\\d{2})(\\d{2})(\\d{2})(\\d{2})(\\d{2})/", $this->reporting_date, $matches);
         $a_xml_writer->xmlElement("fieldentry", NULL, sprintf("P%dY%dM%dDT%dH%dM%dS", $matches[1], $matches[2], $matches[3], $matches[4], $matches[5], $matches[6]));
         $a_xml_writer->xmlEndTag("qtimetadatafield");
     }
     // number of tries
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "nr_of_tries");
     $a_xml_writer->xmlElement("fieldentry", NULL, sprintf("%d", $this->getNrOfTries()));
//.........这里部分代码省略.........

 /**
  * Returns a QTI xml representation of the question
  *
  * Returns a QTI xml representation of the question and sets the internal
  * domxml variable with the DOM XML representation of the QTI xml representation
  *
  * @return string The QTI xml representation of the question
  * @access public
  */
 function toXML($a_include_header = true, $a_include_binary = true, $a_shuffle = false, $test_output = false, $force_image_references = false)
 {
     global $ilias;
     include_once "./classes/class.ilXmlWriter.php";
     $a_xml_writer = new ilXmlWriter();
     // set xml header
     $a_xml_writer->xmlHeader();
     $a_xml_writer->xmlStartTag("questestinterop");
     $attrs = array("ident" => "il_" . IL_INST_ID . "_qst_" . $this->object->getId(), "title" => $this->object->getTitle());
     $a_xml_writer->xmlStartTag("item", $attrs);
     // add question description
     $a_xml_writer->xmlElement("qticomment", NULL, $this->object->getComment());
     // add estimated working time
     $workingtime = $this->object->getEstimatedWorkingTime();
     $duration = sprintf("P0Y0M0DT%dH%dM%dS", $workingtime["h"], $workingtime["m"], $workingtime["s"]);
     $a_xml_writer->xmlElement("duration", NULL, $duration);
     // add ILIAS specific metadata
     $a_xml_writer->xmlStartTag("itemmetadata");
     $a_xml_writer->xmlStartTag("qtimetadata");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "ILIAS_VERSION");
     $a_xml_writer->xmlElement("fieldentry", NULL, $ilias->getSetting("ilias_version"));
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "QUESTIONTYPE");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getQuestionType());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "AUTHOR");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getAuthor());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "points");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getPoints());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "textrating");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getTextRating());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "requestedanswers");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getCorrectAnswers());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlEndTag("qtimetadata");
     // removed additional metadata from assFormulaQuestion
     $a_xml_writer->xmlEndTag("itemmetadata");
     // PART I: qti presentation
     $attrs = array("label" => $this->object->getTitle());
     $a_xml_writer->xmlStartTag("presentation", $attrs);
     // add flow to presentation
     $a_xml_writer->xmlStartTag("flow");
     // add material with question text to presentation
     $this->object->addQTIMaterial($a_xml_writer, $this->object->getQuestion());
     // add answers to presentation
     $attrs = array();
     $attrs = array("ident" => "SYNTAX TREE", "rcardinality" => "Multiple");
     $a_xml_writer->xmlStartTag("response_lid", $attrs);
     $solution = $this->object->getSuggestedSolution(0);
     if (count($solution)) {
         if (preg_match("/il_(\\d*?)_(\\w+)_(\\d+)/", $solution["internal_link"], $matches)) {
             $a_xml_writer->xmlStartTag("material");
             $intlink = "il_" . IL_INST_ID . "_" . $matches[2] . "_" . $matches[3];
             if (strcmp($matches[1], "") != 0) {
                 $intlink = $solution["internal_link"];
             }
             $attrs = array("label" => "suggested_solution");
             $a_xml_writer->xmlElement("mattext", $attrs, $intlink);
             $a_xml_writer->xmlEndTag("material");
         }
     }
     // shuffle output
     $attrs = array();
     $a_xml_writer->xmlStartTag("render_choice", $attrs);
     $answers =& $this->object->getAnswers();
     $akeys = array_keys($answers);
     if ($this->object->getShuffle() && $a_shuffle) {
         $akeys = $this->object->pcArrayShuffle($akeys);
     }
     // add answers
     foreach ($akeys as $index) {
         $answer = $answers[$index];
         $attrs = array("ident" => $index);
         $a_xml_writer->xmlStartTag("response_label", $attrs);
         $this->object->addQTIMaterial($a_xml_writer, $answer->getAnswertext());
         $a_xml_writer->xmlEndTag("response_label");
     }
     $a_xml_writer->xmlEndTag("render_choice");
     $a_xml_writer->xmlEndTag("response_lid");
     $a_xml_writer->xmlEndTag("flow");
     $a_xml_writer->xmlEndTag("presentation");
     // PART II: qti resprocessing
//.........这里部分代码省略.........

 /**
  * Get xml representation
  * 	<dataset install_id="123" install_url="...">
  * 	<types entity="table_name" version="4.0.1">
  *		<ftype name="field_1" type="text" />
  *		<ftype name="field_2" type="date" />
  *		<ftype name="field_3" type="integer" />
  *	</types>
  *  <types ...>
  *    ...
  *  </types>
  *	<set entity="table_name">
  *		<rec>
  *			<field_1>content</field_1>
  *			<field_2>my_date</field_2>
  *			<field_3>my_number</field_3>
  *		</rec>
  *		...
  *	</set>
  *  </dataset>
  */
 final function getXmlRepresentation($a_entity, $a_schema_version, $a_ids, $a_field = "", $a_omit_header = false, $a_omit_types = false)
 {
     $this->dircnt = 1;
     // step 1: check target release and supported versions
     // step 2: init writer
     include_once "./Services/Xml/classes/class.ilXmlWriter.php";
     $writer = new ilXmlWriter();
     if (!$a_omit_header) {
         $writer->xmlHeader();
     }
     // collect namespaces
     $namespaces = $prefixes = array();
     $this->getNamespaces($namespaces, $a_entity, $a_schema_version);
     $atts = array("InstallationId" => IL_INST_ID, "InstallationUrl" => ILIAS_HTTP_PATH, "TopEntity" => $a_entity);
     $cnt = 1;
     foreach ($namespaces as $entity => $ns) {
         $prefix = "ns" . $cnt;
         $prefixes[$entity] = $prefix;
         //			$atts["xmlns:".$prefix] = $ns;
         $cnt++;
     }
     $writer->xmlStartTag($this->getDSPrefixString() . 'DataSet', $atts);
     // add types
     if (!$a_omit_types) {
         $this->addTypesXml($writer, $a_entity, $a_schema_version);
     }
     // add records
     $this->addRecordsXml($writer, $prefixes, $a_entity, $a_schema_version, $a_ids, $a_field = "");
     $writer->xmlEndTag($this->getDSPrefixString() . "DataSet");
     //if ($a_entity == "mep")
     //{
     //	echo "<pre>".htmlentities($writer->xmlDumpMem(true))."</pre>"; exit;
     //}
     return $writer->xmlDumpMem(false);
 }

 /**
  * Returns a QTI xml representation of the question and sets the internal
  * domxml variable with the DOM XML representation of the QTI xml representation
  *
  * @return string The QTI xml representation of the question
  * @access public
  */
 function toXML($a_include_header = true, $a_include_binary = true, $a_shuffle = false, $test_output = false, $force_image_references = false)
 {
     global $ilias;
     include_once "./Services/Xml/classes/class.ilXmlWriter.php";
     $a_xml_writer = new ilXmlWriter();
     // set xml header
     $a_xml_writer->xmlHeader();
     $a_xml_writer->xmlStartTag("questestinterop");
     $attrs = array("ident" => "il_" . IL_INST_ID . "_qst_" . $this->object->getId(), "title" => $this->object->getTitle(), "maxattempts" => $this->object->getNrOfTries());
     $a_xml_writer->xmlStartTag("item", $attrs);
     // add question description
     $a_xml_writer->xmlElement("qticomment", NULL, $this->object->getComment());
     // add estimated working time
     $workingtime = $this->object->getEstimatedWorkingTime();
     $duration = sprintf("P0Y0M0DT%dH%dM%dS", $workingtime["h"], $workingtime["m"], $workingtime["s"]);
     $a_xml_writer->xmlElement("duration", NULL, $duration);
     // add ILIAS specific metadata
     $a_xml_writer->xmlStartTag("itemmetadata");
     $a_xml_writer->xmlStartTag("qtimetadata");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "ILIAS_VERSION");
     $a_xml_writer->xmlElement("fieldentry", NULL, $ilias->getSetting("ilias_version"));
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "QUESTIONTYPE");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getQuestionType());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "AUTHOR");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getAuthor());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // additional content editing information
     $this->addAdditionalContentEditingModeInformation($a_xml_writer);
     $this->addGeneralMetadata($a_xml_writer);
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "points_wrong");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getPointsWrong());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "errortext");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getErrorText());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "textsize");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getTextSize());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "errordata");
     $serialized = array();
     foreach ($this->object->getErrorData() as $data) {
         array_push($serialized, array($data->text_correct, $data->text_wrong, $data->points));
     }
     $a_xml_writer->xmlElement("fieldentry", NULL, serialize($serialized));
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlEndTag("qtimetadata");
     $a_xml_writer->xmlEndTag("itemmetadata");
     // PART I: qti presentation
     $attrs = array("label" => $this->object->getTitle());
     $a_xml_writer->xmlStartTag("presentation", $attrs);
     // add flow to presentation
     $a_xml_writer->xmlStartTag("flow");
     // add material with question text to presentation
     $this->object->addQTIMaterial($a_xml_writer, $this->object->getQuestion());
     // add answers to presentation
     $a_xml_writer->xmlEndTag("flow");
     $a_xml_writer->xmlEndTag("presentation");
     $a_xml_writer->xmlEndTag("item");
     $a_xml_writer->xmlEndTag("questestinterop");
     $xml = $a_xml_writer->xmlDumpMem(FALSE);
     if (!$a_include_header) {
         $pos = strpos($xml, "?>");
         $xml = substr($xml, $pos + 2);
     }
     return $xml;
 }

 /**
  * Returns a QTI xml representation of the question
  *
  * Returns a QTI xml representation of the question and sets the internal
  * domxml variable with the DOM XML representation of the QTI xml representation
  *
  * @return string The QTI xml representation of the question
  * @access public
  */
 function toXML($a_include_header = true, $a_include_binary = true, $a_shuffle = false, $test_output = false, $force_image_references = false)
 {
     global $ilias;
     include_once "./Services/Xml/classes/class.ilXmlWriter.php";
     $a_xml_writer = new ilXmlWriter();
     // set xml header
     $a_xml_writer->xmlHeader();
     $a_xml_writer->xmlStartTag("questestinterop");
     $attrs = array("ident" => "il_" . IL_INST_ID . "_qst_" . $this->object->getId(), "title" => $this->object->getTitle());
     $a_xml_writer->xmlStartTag("item", $attrs);
     // add question description
     $a_xml_writer->xmlElement("qticomment", NULL, $this->object->getComment());
     // add estimated working time
     $workingtime = $this->object->getEstimatedWorkingTime();
     $duration = sprintf("P0Y0M0DT%dH%dM%dS", $workingtime["h"], $workingtime["m"], $workingtime["s"]);
     $a_xml_writer->xmlElement("duration", NULL, $duration);
     // add ILIAS specific metadata
     $a_xml_writer->xmlStartTag("itemmetadata");
     $a_xml_writer->xmlStartTag("qtimetadata");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "ILIAS_VERSION");
     $a_xml_writer->xmlElement("fieldentry", NULL, $ilias->getSetting("ilias_version"));
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "QUESTIONTYPE");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getQuestionType());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "AUTHOR");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getAuthor());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "points");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getPoints());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     //
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "option_string");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getOptionString());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     //
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "sample_solution");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getSampleSolution());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlEndTag("qtimetadata");
     $a_xml_writer->xmlEndTag("itemmetadata");
     // PART I: qti presentation
     $attrs = array("label" => $this->object->getTitle());
     $a_xml_writer->xmlStartTag("presentation", $attrs);
     // add flow to presentation
     $a_xml_writer->xmlStartTag("flow");
     // add material with question text to presentation
     $this->object->addQTIMaterial($a_xml_writer, $this->object->getQuestion());
     $a_xml_writer->xmlEndTag("flow");
     $a_xml_writer->xmlEndTag("presentation");
     // PART III: qti itemfeedback
     $feedback_allcorrect = $this->object->feedbackOBJ->getGenericFeedbackExportPresentation($this->object->getId(), true);
     $feedback_onenotcorrect = $this->object->feedbackOBJ->getGenericFeedbackExportPresentation($this->object->getId(), false);
     $attrs = array("ident" => "Correct", "view" => "All");
     $a_xml_writer->xmlStartTag("itemfeedback", $attrs);
     // qti flow_mat
     $a_xml_writer->xmlStartTag("flow_mat");
     $a_xml_writer->xmlStartTag("material");
     $a_xml_writer->xmlElement("mattext");
     $a_xml_writer->xmlEndTag("material");
     $a_xml_writer->xmlEndTag("flow_mat");
     $a_xml_writer->xmlEndTag("itemfeedback");
     if (strlen($feedback_allcorrect)) {
         $attrs = array("ident" => "response_allcorrect", "view" => "All");
         $a_xml_writer->xmlStartTag("itemfeedback", $attrs);
         // qti flow_mat
         $a_xml_writer->xmlStartTag("flow_mat");
         $this->object->addQTIMaterial($a_xml_writer, $feedback_allcorrect);
         $a_xml_writer->xmlEndTag("flow_mat");
         $a_xml_writer->xmlEndTag("itemfeedback");
     }
     if (strlen($feedback_onenotcorrect)) {
         $attrs = array("ident" => "response_onenotcorrect", "view" => "All");
         $a_xml_writer->xmlStartTag("itemfeedback", $attrs);
         // qti flow_mat
         $a_xml_writer->xmlStartTag("flow_mat");
         $this->object->addQTIMaterial($a_xml_writer, $feedback_onenotcorrect);
         $a_xml_writer->xmlEndTag("flow_mat");
         $a_xml_writer->xmlEndTag("itemfeedback");
     }
     $a_xml_writer->xmlEndTag("item");
     $a_xml_writer->xmlEndTag("questestinterop");
     $xml = $a_xml_writer->xmlDumpMem(FALSE);
     if (!$a_include_header) {
         $pos = strpos($xml, "?>");
//.........这里部分代码省略.........

 /**
  * Returns a QTI xml representation of the question
  *
  * Returns a QTI xml representation of the question and sets the internal
  * domxml variable with the DOM XML representation of the QTI xml representation
  *
  * @return string The QTI xml representation of the question
  * @access public
  */
 function toXML($a_include_header = true, $a_include_binary = true, $a_shuffle = false, $test_output = false, $force_image_references = false)
 {
     global $ilias;
     include_once "./Services/Xml/classes/class.ilXmlWriter.php";
     $a_xml_writer = new ilXmlWriter();
     // set xml header
     $a_xml_writer->xmlHeader();
     $a_xml_writer->xmlStartTag("questestinterop");
     $attrs = array("ident" => "il_" . IL_INST_ID . "_qst_" . $this->object->getId(), "title" => $this->object->getTitle(), "maxattempts" => $this->object->getNrOfTries());
     $a_xml_writer->xmlStartTag("item", $attrs);
     // add question description
     $a_xml_writer->xmlElement("qticomment", NULL, $this->object->getComment());
     // add estimated working time
     $workingtime = $this->object->getEstimatedWorkingTime();
     $duration = sprintf("P0Y0M0DT%dH%dM%dS", $workingtime["h"], $workingtime["m"], $workingtime["s"]);
     $a_xml_writer->xmlElement("duration", NULL, $duration);
     // add ILIAS specific metadata
     $a_xml_writer->xmlStartTag("itemmetadata");
     $a_xml_writer->xmlStartTag("qtimetadata");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "ILIAS_VERSION");
     $a_xml_writer->xmlElement("fieldentry", NULL, $ilias->getSetting("ilias_version"));
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "QUESTIONTYPE");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getQuestionType());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "AUTHOR");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getAuthor());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // additional content editing information
     $this->addAdditionalContentEditingModeInformation($a_xml_writer);
     $this->addGeneralMetadata($a_xml_writer);
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "points");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getPoints());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "width");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getWidth());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "height");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getHeight());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "applet");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getApplet());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "swf");
     $flashpath = $this->object->getFlashPath() . $this->object->getApplet();
     $fh = @fopen($flashpath, "rb");
     $base64 = "";
     if ($fh != FALSE) {
         $flashfile = fread($fh, filesize($flashpath));
         fclose($fh);
         $base64 = base64_encode($flashfile);
     }
     $a_xml_writer->xmlElement("fieldentry", NULL, $base64);
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "params");
     $a_xml_writer->xmlElement("fieldentry", NULL, serialize($this->object->getParameters()));
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlEndTag("qtimetadata");
     $a_xml_writer->xmlEndTag("itemmetadata");
     // PART I: qti presentation
     $attrs = array("label" => $this->object->getTitle());
     $a_xml_writer->xmlStartTag("presentation", $attrs);
     // add flow to presentation
     $a_xml_writer->xmlStartTag("flow");
     // add material with question text to presentation
     $this->object->addQTIMaterial($a_xml_writer, $this->object->getQuestion());
     // add answers to presentation
     $a_xml_writer->xmlEndTag("flow");
     $a_xml_writer->xmlEndTag("presentation");
     $this->exportFeedbackOnly($a_xml_writer);
     $a_xml_writer->xmlEndTag("item");
     $a_xml_writer->xmlEndTag("questestinterop");
     $xml = $a_xml_writer->xmlDumpMem(FALSE);
     if (!$a_include_header) {
         $pos = strpos($xml, "?>");
         $xml = substr($xml, $pos + 2);
     }
     return $xml;
 }

 /**
  * Returns a QTI xml representation of the question
  *
  * Returns a QTI xml representation of the question and sets the internal
  * domxml variable with the DOM XML representation of the QTI xml representation
  *
  * @return string The QTI xml representation of the question
  * @access public
  */
 function toXML($a_include_header = true, $a_include_binary = true, $a_shuffle = false, $test_output = false, $force_image_references = false)
 {
     global $ilias;
     include_once 'Services/Xml/classes/class.ilXmlWriter.php';
     $a_xml_writer = new ilXmlWriter();
     // set xml header
     $a_xml_writer->xmlHeader();
     $a_xml_writer->xmlStartTag("questestinterop");
     $attrs = array("ident" => "il_" . IL_INST_ID . "_qst_" . $this->object->getId(), "title" => $this->object->getTitle());
     $a_xml_writer->xmlStartTag("item", $attrs);
     // add question description
     $a_xml_writer->xmlElement("qticomment", NULL, $this->object->getComment());
     // add estimated working time
     $workingtime = $this->object->getEstimatedWorkingTime();
     $duration = sprintf("P0Y0M0DT%dH%dM%dS", $workingtime["h"], $workingtime["m"], $workingtime["s"]);
     $a_xml_writer->xmlElement("duration", NULL, $duration);
     // add ILIAS specific metadata
     $a_xml_writer->xmlStartTag("itemmetadata");
     $a_xml_writer->xmlStartTag("qtimetadata");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "ILIAS_VERSION");
     $a_xml_writer->xmlElement("fieldentry", NULL, $ilias->getSetting("ilias_version"));
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "QUESTIONTYPE");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getQuestionType());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "AUTHOR");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getAuthor());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "points");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getPoints());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     foreach ($this->object->getVariables() as $variable) {
         $var = array("precision" => $variable->getPrecision(), "intprecision" => $variable->getIntprecision(), "rangemin" => $variable->getRangeMin(), "rangemax" => $variable->getRangeMax(), "unit" => is_object($variable->getUnit()) ? $variable->getUnit()->getUnit() : "", "unitvalue" => is_object($variable->getUnit()) ? $variable->getUnit()->getId() : "");
         $a_xml_writer->xmlStartTag("qtimetadatafield");
         $a_xml_writer->xmlElement("fieldlabel", NULL, $variable->getVariable());
         $a_xml_writer->xmlElement("fieldentry", NULL, serialize($var));
         $a_xml_writer->xmlEndTag("qtimetadatafield");
     }
     foreach ($this->object->getResults() as $result) {
         $resultunits = $this->object->getResultUnits($result);
         $ru = array();
         foreach ($resultunits as $unit) {
             array_push($ru, array("unit" => $unit->getUnit(), "unitvalue" => $unit->getId()));
         }
         $res = array("precision" => $result->getPrecision(), "tolerance" => $result->getTolerance(), "rangemin" => $result->getRangeMin(), "rangemax" => $result->getRangeMax(), "points" => $result->getPoints(), "formula" => $result->getFormula(), "rating" => $result->getRatingSimple() ? "" : array("sign" => $result->getRatingSign(), "value" => $result->getRatingValue(), "unit" => $result->getRatingUnit()), "unit" => is_object($result->getUnit()) ? $result->getUnit()->getUnit() : "", "unitvalue" => is_object($result->getUnit()) ? $result->getUnit()->getId() : "", "resultunits" => $ru);
         $a_xml_writer->xmlStartTag("qtimetadatafield");
         $a_xml_writer->xmlElement("fieldlabel", NULL, $result->getResult());
         $a_xml_writer->xmlElement("fieldentry", NULL, serialize($res));
         $a_xml_writer->xmlEndTag("qtimetadatafield");
     }
     // additional content editing information
     $this->addAdditionalContentEditingModeInformation($a_xml_writer);
     $this->addGeneralMetadata($a_xml_writer);
     $a_xml_writer->xmlEndTag("qtimetadata");
     $a_xml_writer->xmlEndTag("itemmetadata");
     // PART I: qti presentation
     $attrs = array("label" => $this->object->getTitle());
     $a_xml_writer->xmlStartTag("presentation", $attrs);
     // add flow to presentation
     $a_xml_writer->xmlStartTag("flow");
     // add material with question text to presentation
     $this->object->addQTIMaterial($a_xml_writer, $this->object->getQuestion());
     // add answers to presentation
     $a_xml_writer->xmlEndTag("flow");
     $a_xml_writer->xmlEndTag("presentation");
     $a_xml_writer->xmlEndTag("item");
     $a_xml_writer->xmlEndTag("questestinterop");
     $xml = $a_xml_writer->xmlDumpMem(FALSE);
     if (!$a_include_header) {
         $pos = strpos($xml, "?>");
         $xml = substr($xml, $pos + 2);
     }
     return $xml;
 }

 /**
  * Process exporter
  *
  * @param
  * @return
  */
 function processExporter($a_comp, $a_class, $a_entity, $a_target_release, $a_id)
 {
     $success = true;
     if (!is_array($a_id)) {
         if ($a_id == "") {
             return;
         }
         $a_id = array($a_id);
     }
     // get exporter object
     $export_class_file = "./" . $a_comp . "/classes/class." . $a_class . ".php";
     //echo "1-".$export_class_file."-"; exit;
     if (!is_file($export_class_file)) {
         echo "1-not found:" . $export_class_file . "-";
         exit;
         return false;
     }
     include_once $export_class_file;
     $exp = new $a_class();
     if (!isset($this->cnt[$a_comp])) {
         $this->cnt[$a_comp] = 1;
     } else {
         $this->cnt[$a_comp]++;
     }
     $set_dir_relative = $a_comp . "/set_" . $this->cnt[$a_comp];
     $set_dir_absolute = $this->export_run_dir . "/" . $set_dir_relative;
     ilUtil::makeDirParents($set_dir_absolute);
     $exp->init();
     $sv = $exp->determineSchemaVersion($a_entity, $a_target_release);
     // process head dependencies
     $sequence = $exp->getXmlExportHeadDependencies($a_entity, $a_target_release, $a_id);
     foreach ($sequence as $s) {
         $comp = explode("/", $s["component"]);
         $exp_class = "il" . $comp[1] . "Exporter";
         $s = $this->processExporter($s["component"], $exp_class, $s["entity"], $a_target_release, $s["ids"]);
         if (!$s) {
             $success = false;
         }
     }
     // write export.xml file
     $export_writer = new ilXmlWriter();
     $export_writer->xmlHeader();
     $attribs = array("InstallationId" => IL_INST_ID, "InstallationUrl" => ILIAS_HTTP_PATH, "Entity" => $a_entity, "SchemaVersion" => $sv["schema_version"], "TargetRelease" => $a_target_release, "xmlns:xsi" => "http://www.w3.org/2001/XMLSchema-instance", "xmlns:exp" => "http://www.ilias.de/Services/Export/exp/4_1", "xsi:schemaLocation" => "http://www.ilias.de/Services/Export/exp/4_1 " . ILIAS_HTTP_PATH . "/xml/ilias_export_4_1.xsd");
     if ($sv["namespace"] != "" && $sv["xsd_file"] != "") {
         $attribs["xsi:schemaLocation"] .= " " . $sv["namespace"] . " " . ILIAS_HTTP_PATH . "/xml/" . $sv["xsd_file"];
         $attribs["xmlns"] = $sv["namespace"];
     }
     if ($sv["uses_dataset"]) {
         $attribs["xsi:schemaLocation"] .= " " . "http://www.ilias.de/Services/DataSet/ds/4_3 " . ILIAS_HTTP_PATH . "/xml/ilias_ds_4_3.xsd";
         $attribs["xmlns:ds"] = "http://www.ilias.de/Services/DataSet/ds/4_3";
     }
     $export_writer->xmlStartTag('exp:Export', $attribs);
     $dir_cnt = 1;
     foreach ($a_id as $id) {
         $exp->setExportDirectories($set_dir_relative . "/expDir_" . $dir_cnt, $set_dir_absolute . "/expDir_" . $dir_cnt);
         $export_writer->xmlStartTag('exp:ExportItem', array("Id" => $id));
         //$xml = $exp->getXmlRepresentation($a_entity, $a_target_release, $id);
         $xml = $exp->getXmlRepresentation($a_entity, $sv["schema_version"], $id);
         $export_writer->appendXml($xml);
         $export_writer->xmlEndTag('exp:ExportItem');
         $dir_cnt++;
     }
     $export_writer->xmlEndTag('exp:Export');
     $export_writer->xmlDumpFile($set_dir_absolute . "/export.xml", false);
     $this->manifest_writer->xmlElement("ExportFile", array("Component" => $a_comp, "Path" => $set_dir_relative . "/export.xml"));
     // process tail dependencies
     $sequence = $exp->getXmlExportTailDependencies($a_entity, $a_target_release, $a_id);
     foreach ($sequence as $s) {
         $comp = explode("/", $s["component"]);
         $exp_class = "il" . $comp[1] . "Exporter";
         $s = $this->processExporter($s["component"], $exp_class, $s["entity"], $a_target_release, $s["ids"]);
         if (!$s) {
             $success = false;
         }
     }
     return $success;
 }

 public function toXML($a_include_header = true, $a_include_binary = true, $a_shuffle = false, $test_output = false, $force_image_references = false)
 {
     global $ilias;
     include_once "./Services/Xml/classes/class.ilXmlWriter.php";
     $xml = new ilXmlWriter();
     // set xml header
     $xml->xmlHeader();
     $xml->xmlStartTag("questestinterop");
     $attrs = array("ident" => "il_" . IL_INST_ID . "_qst_" . $this->object->getId(), "title" => $this->object->getTitle(), "maxattempts" => $this->object->getNrOfTries());
     $xml->xmlStartTag("item", $attrs);
     // add question description
     $xml->xmlElement("qticomment", NULL, $this->object->getComment());
     // add estimated working time
     $workingtime = $this->object->getEstimatedWorkingTime();
     $duration = sprintf("P0Y0M0DT%dH%dM%dS", $workingtime["h"], $workingtime["m"], $workingtime["s"]);
     $xml->xmlElement("duration", NULL, $duration);
     // add ILIAS specific metadata
     $xml->xmlStartTag("itemmetadata");
     $xml->xmlStartTag("qtimetadata");
     $xml->xmlStartTag("qtimetadatafield");
     $xml->xmlElement("fieldlabel", NULL, "ILIAS_VERSION");
     $xml->xmlElement("fieldentry", NULL, $ilias->getSetting("ilias_version"));
     $xml->xmlEndTag("qtimetadatafield");
     $xml->xmlStartTag("qtimetadatafield");
     $xml->xmlElement("fieldlabel", NULL, "QUESTIONTYPE");
     $xml->xmlElement("fieldentry", NULL, KPRIM_CHOICE_QUESTION_IDENTIFIER);
     $xml->xmlEndTag("qtimetadatafield");
     $xml->xmlStartTag("qtimetadatafield");
     $xml->xmlElement("fieldlabel", NULL, "AUTHOR");
     $xml->xmlElement("fieldentry", NULL, $this->object->getAuthor());
     $xml->xmlEndTag("qtimetadatafield");
     // additional content editing information
     $this->addAdditionalContentEditingModeInformation($xml);
     $this->addGeneralMetadata($xml);
     $xml->xmlStartTag("qtimetadatafield");
     $xml->xmlElement("fieldlabel", NULL, "answer_type");
     $xml->xmlElement("fieldentry", NULL, $this->object->getAnswerType());
     $xml->xmlEndTag("qtimetadatafield");
     $xml->xmlStartTag("qtimetadatafield");
     $xml->xmlElement("fieldlabel", NULL, "thumb_size");
     $xml->xmlElement("fieldentry", NULL, $this->object->getThumbSize());
     $xml->xmlEndTag("qtimetadatafield");
     $xml->xmlStartTag("qtimetadatafield");
     $xml->xmlElement("fieldlabel", NULL, "option_label_setting");
     $xml->xmlElement("fieldentry", NULL, $this->object->getOptionLabel());
     $xml->xmlEndTag("qtimetadatafield");
     $xml->xmlStartTag("qtimetadatafield");
     $xml->xmlElement("fieldlabel", NULL, "custom_true_option_label");
     $xml->xmlElement("fieldentry", NULL, $this->object->getCustomTrueOptionLabel());
     $xml->xmlEndTag("qtimetadatafield");
     $xml->xmlStartTag("qtimetadatafield");
     $xml->xmlElement("fieldlabel", NULL, "custom_false_option_label");
     $xml->xmlElement("fieldentry", NULL, $this->object->getCustomFalseOptionLabel());
     $xml->xmlEndTag("qtimetadatafield");
     $xml->xmlStartTag("qtimetadatafield");
     $xml->xmlElement("fieldlabel", NULL, "feedback_setting");
     $xml->xmlElement("fieldentry", NULL, $this->object->getSpecificFeedbackSetting());
     $xml->xmlEndTag("qtimetadatafield");
     $xml->xmlEndTag("qtimetadata");
     $xml->xmlEndTag("itemmetadata");
     // PART I: qti presentation
     $attrs = array("label" => $this->object->getTitle());
     $xml->xmlStartTag("presentation", $attrs);
     // add flow to presentation
     $xml->xmlStartTag("flow");
     // add material with question text to presentation
     $this->object->addQTIMaterial($xml, $this->object->getQuestion());
     // add answers to presentation
     $attrs = array("ident" => "MCMR", "rcardinality" => "Multiple");
     $xml->xmlStartTag("response_lid", $attrs);
     $solution = $this->object->getSuggestedSolution(0);
     if (count($solution)) {
         if (preg_match("/il_(\\d*?)_(\\w+)_(\\d+)/", $solution["internal_link"], $matches)) {
             $xml->xmlStartTag("material");
             $intlink = "il_" . IL_INST_ID . "_" . $matches[2] . "_" . $matches[3];
             if (strcmp($matches[1], "") != 0) {
                 $intlink = $solution["internal_link"];
             }
             $attrs = array("label" => "suggested_solution");
             $xml->xmlElement("mattext", $attrs, $intlink);
             $xml->xmlEndTag("material");
         }
     }
     // shuffle output
     $attrs = array();
     if ($this->object->isShuffleAnswersEnabled()) {
         $attrs = array("shuffle" => "Yes");
     } else {
         $attrs = array("shuffle" => "No");
     }
     $xml->xmlStartTag("render_choice", $attrs);
     // add answers
     $answers =& $this->object->getAnswers();
     $akeys = array_keys($answers);
     foreach ($akeys as $index) {
         $answer = $this->object->getAnswer($index);
         $xml->xmlStartTag('response_label', array('ident' => $answer->getPosition()));
         if (strlen($answer->getImageFile())) {
             $this->object->addQTIMaterial($xml, $answer->getAnswertext(), FALSE, FALSE);
             $imagetype = "image/jpeg";
//.........这里部分代码省略.........

 /**
  * Returns a QTI xml representation of the question
  *
  * Returns a QTI xml representation of the question and sets the internal
  * domxml variable with the DOM XML representation of the QTI xml representation
  *
  * @return string The QTI xml representation of the question
  * @access public
  */
 function toXML($a_include_header = true, $a_include_binary = true, $a_shuffle = false, $test_output = false, $force_image_references = false)
 {
     global $ilias;
     include_once "./Services/Math/classes/class.EvalMath.php";
     $eval = new EvalMath();
     $eval->suppress_errors = TRUE;
     include_once "./Services/Xml/classes/class.ilXmlWriter.php";
     $a_xml_writer = new ilXmlWriter();
     // set xml header
     $a_xml_writer->xmlHeader();
     $a_xml_writer->xmlStartTag("questestinterop");
     $attrs = array("ident" => "il_" . IL_INST_ID . "_qst_" . $this->object->getId(), "title" => $this->object->getTitle(), "maxattempts" => $this->object->getNrOfTries());
     $a_xml_writer->xmlStartTag("item", $attrs);
     // add question description
     $a_xml_writer->xmlElement("qticomment", NULL, $this->object->getComment());
     // add estimated working time
     $workingtime = $this->object->getEstimatedWorkingTime();
     $duration = sprintf("P0Y0M0DT%dH%dM%dS", $workingtime["h"], $workingtime["m"], $workingtime["s"]);
     $a_xml_writer->xmlElement("duration", NULL, $duration);
     // add ILIAS specific metadata
     $a_xml_writer->xmlStartTag("itemmetadata");
     $a_xml_writer->xmlStartTag("qtimetadata");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "ILIAS_VERSION");
     $a_xml_writer->xmlElement("fieldentry", NULL, $ilias->getSetting("ilias_version"));
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "QUESTIONTYPE");
     $a_xml_writer->xmlElement("fieldentry", NULL, CLOZE_TEST_IDENTIFIER);
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "AUTHOR");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getAuthor());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // additional content editing information
     $this->addAdditionalContentEditingModeInformation($a_xml_writer);
     $this->addGeneralMetadata($a_xml_writer);
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "textgaprating");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getTextgapRating());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "fixedTextLength");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getFixedTextLength());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "identicalScoring");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->object->getIdenticalScoring());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "combinations");
     $a_xml_writer->xmlElement("fieldentry", NULL, base64_encode(json_encode($this->object->getGapCombinations())));
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     $a_xml_writer->xmlEndTag("qtimetadata");
     $a_xml_writer->xmlEndTag("itemmetadata");
     // PART I: qti presentation
     $attrs = array("label" => $this->object->getTitle());
     $a_xml_writer->xmlStartTag("presentation", $attrs);
     // add flow to presentation
     $a_xml_writer->xmlStartTag("flow");
     $questionText = $this->object->getQuestion() ? $this->object->getQuestion() : ' ';
     $this->object->addQTIMaterial($a_xml_writer, $questionText);
     $text_parts = preg_split("/\\[gap.*?\\[\\/gap\\]/", $this->object->getClozeText());
     // add material with question text to presentation
     for ($i = 0; $i <= $this->object->getGapCount(); $i++) {
         $this->object->addQTIMaterial($a_xml_writer, $text_parts[$i]);
         if ($i < $this->object->getGapCount()) {
             // add gap
             $gap = $this->object->getGap($i);
             switch ($gap->getType()) {
                 case CLOZE_SELECT:
                     // comboboxes
                     $attrs = array("ident" => "gap_{$i}", "rcardinality" => "Single");
                     $a_xml_writer->xmlStartTag("response_str", $attrs);
                     $solution = $this->object->getSuggestedSolution($i);
                     if (count($solution)) {
                         if (preg_match("/il_(\\d*?)_(\\w+)_(\\d+)/", $solution["internal_link"], $matches)) {
                             $attrs = array("label" => "suggested_solution");
                             $a_xml_writer->xmlStartTag("material", $attrs);
                             $intlink = "il_" . IL_INST_ID . "_" . $matches[2] . "_" . $matches[3];
                             if (strcmp($matches[1], "") != 0) {
                                 $intlink = $solution["internal_link"];
                             }
                             $a_xml_writer->xmlElement("mattext", NULL, $intlink);
                             $a_xml_writer->xmlEndTag("material");
                         }
                     }
                     $attrs = array("shuffle" => $gap->getShuffle() ? "Yes" : "No");
                     $a_xml_writer->xmlStartTag("render_choice", $attrs);
                     // add answers
                     foreach ($gap->getItems() as $answeritem) {
//.........这里部分代码省略.........

 /**
  * Returns a QTI xml representation of the test
  *
  * @return string The QTI xml representation of the test
  * @access public
  */
 function toXML()
 {
     include_once "./Services/Xml/classes/class.ilXmlWriter.php";
     $a_xml_writer = new ilXmlWriter();
     // set xml header
     $a_xml_writer->xmlHeader();
     $a_xml_writer->xmlSetDtdDef("<!DOCTYPE questestinterop SYSTEM \"ims_qtiasiv1p2p1.dtd\">");
     $a_xml_writer->xmlStartTag("questestinterop");
     $attrs = array("ident" => "il_" . IL_INST_ID . "_tst_" . $this->getTestId(), "title" => $this->getTitle());
     $a_xml_writer->xmlStartTag("assessment", $attrs);
     // add qti comment
     $a_xml_writer->xmlElement("qticomment", NULL, $this->getDescription());
     // add qti duration
     if ($this->enable_processing_time) {
         preg_match("/(\\d+):(\\d+):(\\d+)/", $this->processing_time, $matches);
         $a_xml_writer->xmlElement("duration", NULL, sprintf("P0Y0M0DT%dH%dM%dS", $matches[1], $matches[2], $matches[3]));
     }
     // add the rest of the preferences in qtimetadata tags, because there is no correspondent definition in QTI
     $a_xml_writer->xmlStartTag("qtimetadata");
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "ILIAS_VERSION");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->ilias->getSetting("ilias_version"));
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // anonymity
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "anonymity");
     $a_xml_writer->xmlElement("fieldentry", NULL, sprintf("%d", $this->getAnonymity()));
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // random test
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "random_test");
     $a_xml_writer->xmlElement("fieldentry", NULL, sprintf("%d", $this->isRandomTest()));
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // sequence settings
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "sequence_settings");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->getSequenceSettings());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // author
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "author");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->getAuthor());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // reset processing time
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "reset_processing_time");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->getResetProcessingTime());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // count system
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "count_system");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->getCountSystem());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // multiple choice scoring
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "mc_scoring");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->getMCScoring());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // multiple choice scoring
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "score_cutting");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->getScoreCutting());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // multiple choice scoring
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "password");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->getPassword());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // allowed users
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "allowedUsers");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->getAllowedUsers());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // allowed users time gap
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "allowedUsersTimeGap");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->getAllowedUsersTimeGap());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // pass scoring
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "pass_scoring");
     $a_xml_writer->xmlElement("fieldentry", NULL, $this->getPassScoring());
     $a_xml_writer->xmlEndTag("qtimetadatafield");
     // score reporting date
     if ($this->getReportingDate()) {
         $a_xml_writer->xmlStartTag("qtimetadatafield");
         $a_xml_writer->xmlElement("fieldlabel", NULL, "reporting_date");
         preg_match("/(\\d{4})(\\d{2})(\\d{2})(\\d{2})(\\d{2})(\\d{2})/", $this->reporting_date, $matches);
         $a_xml_writer->xmlElement("fieldentry", NULL, sprintf("P%dY%dM%dDT%dH%dM%dS", $matches[1], $matches[2], $matches[3], $matches[4], $matches[5], $matches[6]));
         $a_xml_writer->xmlEndTag("qtimetadatafield");
     }
     // number of tries
     $a_xml_writer->xmlStartTag("qtimetadatafield");
     $a_xml_writer->xmlElement("fieldlabel", NULL, "nr_of_tries");
//.........这里部分代码省略.........