topicID=0;
$this->questionLimit=0;
$this->questionList= array();
$this->answerList= array();
$this->maxNumberOfAns=0;
$this->selectedAnswers= array();
$this->correct=array();
$this->wrongQuestions=array();
$this->lp_id;
$this->rawToPass;
$this->question=new Question();
$this->percentTest=0;
}
function getQuestionLimit() {
return $this->questionLimit;
}
function setQuestionLimit($numOfQu){
$this->questionLimit= $numOfQu;
}
function setTopicID($id) {
$this->topicID=$id;
}
function getTopicID(){
return $this->topicID;
}
function getAnswerList () {
return $this->answerList;
}
function setRawToPass($percentage){
$this->rawToPass=$percentage;
}
function generateQuestions(){ // Fragen werden random aus DB gelesen
$sqlGetQu=" SELECT q_id,qt_id,t_id,question,description FROM questions WHERE t_id =".intval($this->topicID)." AND active=".intval(1)." ORDER BY RAND()LIMIT ".intval($this->questionLimit)."";
$queryGetQu = mysql_query($sqlGetQu);
$number=mysql_num_rows($queryGetQu);
if($number== $this->questionLimit){
$i=1; // zähler
while($questions =mysql_fetch_array($queryGetQu ,MYSQL_BOTH ))
{
$this->questionList[$i]['q_id']=$questions['q_id']; // in arra speichern
$this->questionList[$i]['qt_id']=$questions['qt_id'];
$this->questionList[$i]['t_id']=$questions['t_id'];
$this->questionList[$i]['question']=stripslashes($questions['question']);
$this->questionList[$i]['description']=$questions['description'];
$sqlGetNumber="SELECT count(a_id)as number FROM answers WHERE q_id=".intval($questions['q_id'])." GROUP BY q_id";
$queryGetNumber = mysql_query($sqlGetNumber);
while($number =mysql_fetch_array( $queryGetNumber ,MYSQL_BOTH ))
{
$this->questionList[$i]['numberOfAnswers']=$number['number'];
}
if($this->questionList[$i]['description']==1) {
// beschreibung in Session speichern falls vorhanden
$sql_desc="SELECT description FROM question_description WHERE q_id=".intval($questions['q_id'])."";
$query_desc=mysql_query($sql_desc);
$desc = mysql_fetch_assoc($query_desc);
$this->questionList[$i]['description_text']=stripslashes($desc['description']);
}
$i++;
}
$_SESSION['values']['questionList']=$this->questionList;
}
else{
echo "
".Class_Quiz_01."
";
$value ="notEnoughQuestions";
return $value;
}
}
function getQuestionList() {
return $this->questionList;
}
function setQuestions() {
$this->questionList=$_SESSION['values']['questionList'];
}
function getDBAnswers() { // Antworten zu den Frage aus DB holen
for($i=1;$i<=$this->questionLimit;$i++){
$value= $this->questionList[$i]['q_id'];
$sqlGetAns="SELECT a_id,answer,correct FROM answers WHERE q_id=".intval($value)." ORDER BY RAND()";
$queryGetAns = mysql_query($sqlGetAns);
$j=1; // Zähler
while($answers =mysql_fetch_array($queryGetAns ,MYSQL_BOTH )) {
$this->answerList[$value][$j]['q_id']= $value;
$this->answerList[$value][$j]['a_id']=$answers['a_id']; // in arra speichern
$this->answerList[$value][$j]['answer']=stripslashes($answers['answer']);
$this->answerList[$value][$j]['correct']=$answers['correct'];
$j++;
}
}
$_SESSION ['values'] ['answerList']= $this->answerList;
}
function setAnswers(){
$this->answerList=$_SESSION ['values']['answerList'];
}
function setSelectedAnswers (){
$this->selectedAnswers=$_SESSION ['values']['selectedAnswers'];
}
function showQuiz() {
echo "";
}
function SingleSelection($i,$value){
for ($j=1;$j<=$this->questionList[$i]['numberOfAnswers'];$j++){ // Solange Schleife durchlaufen wie die maximale Anzahl der Antworten ist
$answer=$this->answerList[$value][$j]['answer'];
$answerNumber=$this->answerList[$value][$j]['a_id'];
if($answer!=null) { // Wenn es eine Antwort gibt soll diese angezeigt werden
echo "
";
echo "
";
echo"
";
if ($answer=='true') echo"
".Class_Answer_09."
";
else if ($answer=='false') echo"
".Class_Answer_10."
";
else echo"
$answer
";
echo "
";
echo "
";
}
}
echo "
";
}
function MultipleChoice($i,$value){
for ($j=1;$j<=$this->questionList[$i]['numberOfAnswers'];$j++){ // Solange Schleife durchlaufen wie die maximale Anzahl der Antworten ist
$answer=$this->answerList[$value][$j]['answer'];
$answerNumber=$this->answerList[$value][$j]['a_id'];
if($answer!=null){ // Wenn es eine Antwort gibt soll diese angezeigt werden
echo "
';
$correctAns=$this->question->getCorrectAnswerFillInTheBlanks($question); // korrekte Antworen ermitteln
$numberOfAnswers=$this->questionList[$i]['numberOfAnswers'];
for ($l=0;$l $value, 'a_id' => $correctAns[$l+1]['answer'],'answer' =>$correctAns[$l+1]['answer'],'correct'=>1,'blank'=>$correctAns[$l+1]['blank']);
$numberOfAnswers=$numberOfAnswers+1; // Anzahl der Antworten erhöhen
$this->answerList[$value][$numberOfAnswers]= $addCorrect ; // an richtiger Stelle einfügen
}
$this->answerList=$this->randomizeArray($this->answerList,$value);
$addSlashes= preg_quote($question, '[^]'); // Slash hinzufügen wenn KLammer gefunden wird
$array=explode('\\',$addSlashes); // String teilen
for($k=0;$k ";
for ($j=1;$j<=$numberOfAnswers;$j++){ // Solange Schleife durchlaufen wie die maximale Anzahl der Antworten ist
$answer=$this->answerList[$value][$j]['answer'];
$answerNumber=$this->answerList[$value][$j]['a_id'];
//echo $this->answerList[$value][$j]['a_id'];
echo"";
}
echo"";
}
else if((strstr($array[$k],']'))){
$array[$k]=str_replace("]",'', $array[$k]); // Klammer entfernen
echo $array[$k];
}
else echo $array[$k];
}
echo "
";
echo "
";
echo "";
echo "
";
}
function evaluateQuiz() {
echo"
";
echo "";
echo "
";
$this->updateStatistic();
$this->getTestResult();
$this->createLearnProgress();
}
function evaluateSingleSelection($i,$value){
for ($j=1;$j<=$this->questionList[$i]['numberOfAnswers'];$j++) { // Solange Schleife durchlaufen wie die maximale Anzahl der Antworten ist
$answer=$this->answerList[$value][$j]['answer'];
$answerNumber=$this->answerList[$value][$j]['a_id'];
if($answer!=null) { // Wenn es eine Antwort gibt soll diese angezeigt werden
echo "\n
";
}
if(isset($this->selectedAnswers[$value]) && isset($this->answerList[$value][$j]['correct']) &&
$this->selectedAnswers[$value]==$this->answerList[$value][$j]['a_id'] && $this->answerList[$value][$j]['correct']==1) {
$correct[]=1;
}
}
$this->showDescription($i);
if(!isset($correct)) $correct[]=0;
$this->checkAnswers($correct,$value);
}
function evaluateMultipleChoice($i,$value) {
for ($j=1;$j<=$this->questionList[$i]['numberOfAnswers'];$j++){ // Solange Schleife durchlaufen wie die maximale Anzahl der Antworten ist
for($k=0;$k<$this->questionList[$i]['numberOfAnswers'];$k++){ // markieren welche Antworten der Benutzer ausgewählt hat
if(isset($this->selectedAnswers [$value][$k]) && $this->selectedAnswers [$value][$k]!=null){ // wenn die Antwort nicht null ist
if($this->selectedAnswers [$value][$k]==$this->answerList[$value][$j]['a_id'])$checked [$j]=1;
else if(!isset($checked[$j]) || !$checked [$j]) $checked [$j]=0;
}
}
}
for ($j=1;$j<=$this->questionList[$i]['numberOfAnswers'];$j++){ // antworten die der Benutzer ausewählt hat ausgeben
echo "\n
";
echo "
";
echo "
";
$answer=$this->answerList[$value][$j]['answer'];
$answerNumber=$this->answerList[$value][$j]['a_id'];
if (!isset($checked[$j])) $checked[$j] = 0;
if($checked[$j]==1) echo"";
else if ($checked[$j]==0) echo"";
echo "
";
if(($this->answerList[$value][$j]['correct']==1) && ($checked [$j]==1)){ //Prüfung auf Richtigkeit
$correct[$j]=1;
unset($this->answerList[$value][$j]);
} else if(($this->answerList[$value][$j]['correct']==1)&& ($checked [$j]==0))$correct[$j]=0;
else if(($this->answerList[$value][$j]['correct']==0) && ($checked [$j]==1))$correct[$j]=0;
}
$this->showDescription($i);
$this->checkAnswers($correct,$value);
}
function evaluateFillInTheBlanks($i,$value,$question){
$addSlashes= preg_quote($question, '[^]'); // Slash hinzufügen wenn KLammer gefunden wird
$array=explode('\\',$addSlashes); // String teilen
// Was Benutzer markiert hat
for($k=0;$kanswerList[$value]);$j++){ // antworten die der Benutzer ausewählt hat ausgeben
$answer=$this->answerList[$value][$j]['answer']; // Amtwort wird zugewiesen
if($this->selectedAnswers[$value][$k]==$this->answerList[$value][$j]['a_id']){
echo " ";
if(isset($this->answerList[$value][$j]['blank']) && $this->answerList[$value][$j]['blank']==$k) $correct[]=1;
else $correct[]=0;
break;
}
}
} else if((strstr($array[$k],']'))){
$array[$k]=str_replace("]",'', $array[$k]); // Klammer entfernen
echo $array[$k];
} else echo $array[$k];
}
echo "";
echo "";
echo "\n
";
echo "
";
echo "
";
// Was richtig ist
$addSlashes= preg_quote($question, '[^]'); // Slash hinzufügen wenn KLammer gefunden wird
$array=explode('\\',$addSlashes); // String teilen
//echo"
";
$this->showDescription($i);
$this->checkAnswers($correct,$value);
}
function checkAnswers($correct,$value) {
$check = in_array(0, $correct); // Prüfen ob im Array der Wert 0 ist, denn dann wurde mindestens eine Antwort falsch beantwortet
echo "\n
";
if(!$check)echo"
";
else {
$this->wrongQuestions[]=$value;
echo"
";
}
echo "
";
}
function updateStatistic() {
for($i=1;$i<=$this->questionLimit;$i++) {
$sql="SELECT count FROM statistics WHERE q_id=".intval($this->questionList[$i]['q_id'])."";
$query = mysql_query($sql);
while($count=mysql_fetch_array($query ,MYSQL_BOTH )){
$count=$count['count'];
$count=$count+1;
$sql_update="UPDATE statistics SET count=".intval($count)." WHERE q_id=".intval($this->questionList[$i]['q_id'])."";
$query_update = mysql_query($sql_update);
}
}
}
function createLearnProgress() { // Lernprogress erstellen
$timestamp = time();
$date= date("Y-m-d H:i:s" ,$timestamp); // aktuelles Datum und Uhrzeit berechnen
$correctAnswers=$this->questionLimit-count($this->wrongQuestions);
$wrongAnswers=count($this->wrongQuestions);
$passed=$this->testPassed;
$sql="INSERT INTO learnprogress (user_id,root,date,t_id,number,correct,wrong,percentage,passed)
VALUES ('".mysql_real_escape_string($_SESSION['profile']['id'])."',
'".mysql_real_escape_string($_SESSION['profile']['root'])."',
'$date',
".intval($this->topicID).",
".intval($this->questionLimit).",
".intval($correctAnswers).",
".intval($wrongAnswers).",
".mysql_real_escape_string($this->percentTest).",
".intval($passed).")";
$query = mysql_query($sql);
$this->lp_id = mysql_insert_id();
$this->insertAnswersIncorrect();
}
function insertAnswersIncorrect(){
foreach($this->wrongQuestions as $value){
$sql="INSERT INTO answers_incorrect (lp_id,q_id) VALUES ( ".intval($this->lp_id).",".intval($value).")";
$query = mysql_query($sql);
}
}
function getTestResult(){
$wrong=count($this->wrongQuestions);
$correct=$this->questionLimit-$wrong;
if($wrong==0)$percentTest=100;
else if(($wrong>=$this->questionLimit) || ($this->questionLimit < 1))$percentTest=0;
else $percentTest=($correct/$this->questionLimit)*100;
$percentTest=round($percentTest, 2);
$this->percentTest=$percentTest;
$this->testPassed=0;
if($this->rawToPass > 0 && $this->rawToPass <= $percentTest)$value="".Class_Quiz_08."";
else $value="".Class_Quiz_09."";
echo'
";
//createLearnProgress();
if($this->rawToPass > 0 && $this->rawToPass <= $percentTest) {
$this->testPassed=1;
// Test has been passed, maybe a paper/PDF-certificate can be requested
if ($_SERVER['SSL_CLIENT_S_DN_CN']=="CAcert WoT User") {
// Sorry, we cannot issue certificates for anonymous users
echo '
'.Class_Quiz_10_AnonymousCert."
";
} else {
echo "";
}
}
}
function showDescription($i){
if(isset($_SESSION['values']['questionList'][$i]['description_text'])){
// Ausgabe der Beschreibung
echo "\n
