mirror of
https://github.com/CAcertOrg/cats.git
synced 2024-11-08 07:04:03 +00:00
536 lines
23 KiB
PHP
Executable file
536 lines
23 KiB
PHP
Executable file
<?php
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class Quiz
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{
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var $topicID;
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var $questionLimit;
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var $questionList;
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var $answerList;
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var $maxNumberOfAns;
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var $selectedAnswers;
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var $correct;
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var $wrongQuestions;
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var $lp_id;
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var $rawToPass;
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var $question;
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var $percentTest;
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var $testPassed;
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function Quiz(){
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$this->topicID=0;
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$this->questionLimit=0;
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$this->questionList= array();
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$this->answerList= array();
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$this->maxNumberOfAns=0;
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$this->selectedAnswers= array();
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$this->correct=array();
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$this->wrongQuestions=array();
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$this->lp_id;
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$this->rawToPass;
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$this->question=new Question();
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$this->percentTest=0;
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}
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function getQuestionLimit() {
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return $this->questionLimit;
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}
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function setQuestionLimit($numOfQu){
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$this->questionLimit= $numOfQu;
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}
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function setTopicID($id) {
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$this->topicID=$id;
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}
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function getTopicID(){
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return $this->topicID;
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}
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function getAnswerList () {
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return $this->answerList;
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}
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function setRawToPass($percentage){
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$this->rawToPass=$percentage;
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}
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function generateQuestions(){ // Fragen werden random aus DB gelesen
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$sqlGetQu=" SELECT q_id,qt_id,t_id,question,description FROM questions WHERE t_id =".intval($this->topicID)." AND active=".intval(1)." ORDER BY RAND()LIMIT ".intval($this->questionLimit)."";
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$queryGetQu = mysql_query($sqlGetQu);
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$number=mysql_num_rows($queryGetQu);
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if($number== $this->questionLimit){
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$i=1; // zähler
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while($questions =mysql_fetch_array($queryGetQu ,MYSQL_BOTH ))
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{
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$this->questionList[$i]['q_id']=$questions['q_id']; // in arra speichern
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$this->questionList[$i]['qt_id']=$questions['qt_id'];
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$this->questionList[$i]['t_id']=$questions['t_id'];
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$this->questionList[$i]['question']=stripslashes($questions['question']);
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$this->questionList[$i]['description']=$questions['description'];
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$sqlGetNumber="SELECT count(a_id)as number FROM answers WHERE q_id=".intval($questions['q_id'])." GROUP BY q_id";
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$queryGetNumber = mysql_query($sqlGetNumber);
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while($number =mysql_fetch_array( $queryGetNumber ,MYSQL_BOTH ))
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{
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$this->questionList[$i]['numberOfAnswers']=$number['number'];
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}
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if($this->questionList[$i]['description']==1) {
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// beschreibung in Session speichern falls vorhanden
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$sql_desc="SELECT description FROM question_description WHERE q_id=".intval($questions['q_id'])."";
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$query_desc=mysql_query($sql_desc);
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$desc = mysql_fetch_assoc($query_desc);
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$this->questionList[$i]['description_text']=stripslashes($desc['description']);
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}
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$i++;
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}
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$_SESSION['values']['questionList']=$this->questionList;
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} else {
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echo "<h5>".Class_Quiz_01." </h5>";
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$value ="notEnoughQuestions";
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return $value;
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}
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}
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function getQuestionList() {
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return $this->questionList;
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}
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function setQuestions() {
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$this->questionList=$_SESSION['values']['questionList'];
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}
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function getDBAnswers() { // Antworten zu den Frage aus DB holen
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for($i=1;$i<=$this->questionLimit;$i++){
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$value= $this->questionList[$i]['q_id'];
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$sqlGetAns="SELECT a_id,answer,correct FROM answers WHERE q_id=".intval($value)." ORDER BY RAND()";
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$queryGetAns = mysql_query($sqlGetAns);
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$j=1; // Zähler
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while($answers =mysql_fetch_array($queryGetAns ,MYSQL_BOTH )) {
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$this->answerList[$value][$j]['q_id']= $value;
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$this->answerList[$value][$j]['a_id']=$answers['a_id']; // in arra speichern
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$this->answerList[$value][$j]['answer']=stripslashes($answers['answer']);
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$this->answerList[$value][$j]['correct']=$answers['correct'];
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$j++;
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}
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}
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$_SESSION ['values'] ['answerList']= $this->answerList;
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}
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function setAnswers(){
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$this->answerList=$_SESSION ['values']['answerList'];
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}
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function setSelectedAnswers (){
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$this->selectedAnswers=$_SESSION ['values']['selectedAnswers'];
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}
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function showQuiz() {
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echo "<form action='index.php?site=start_test&action=evaluate' method='post'>";
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echo "<fieldset>";
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echo " <legend>".Class_Quiz_02."</legend>";
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echo "<table class='table_show_quiz'>";
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for($i=1;$i<=$this->questionLimit;$i++) {
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$value= $this->questionList[$i]['q_id']; // Value den Wert der q_id geben
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$question=str_replace("\n", "<br>", $this->questionList[$i]['question']);
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echo "<tr>";
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echo"<td class='nr' valign='top' >".Global_08." $i: </td>";
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if($this->questionList[$i]['qt_id']!=4) {
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echo"<td class='question' colspan='3'>$question </td> ";
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echo"</tr>";
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} // wenn der Typ nicht 4 ist anzeigen
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if($this->questionList[$i]['qt_id']==1) $this->SingleSelection($i,$value);
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if($this->questionList[$i]['qt_id']==2) $this->MultipleChoice($i,$value);
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if($this->questionList[$i]['qt_id']==3) $this->SingleSelection($i,$value); // Kann die selbe Maske verwendet werden
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if($this->questionList[$i]['qt_id']==4) $this->FillInTheBlanks($i,$value,$question);
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}
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echo "<tr>";
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echo "<td class='evaluate' colspan='4'>";
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echo"<input type='hidden' name='t_id' value='$this->topicID'/>";
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//echo"<input type='hidden' name='questionList' value='$questionList'/>";
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//echo"<input type='hidden' name='answerList' value='$answerList'/>";
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echo" <input name='submit' class='Button_right' type='submit' value='".Button_16."' /> ";
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echo "</td>";
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echo "</tr>";
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echo "</table>";
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echo "</fieldset>";
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echo"</form>";
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}
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function SingleSelection($i,$value){
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for ($j=1;$j<=$this->questionList[$i]['numberOfAnswers'];$j++){ // Solange Schleife durchlaufen wie die maximale Anzahl der Antworten ist
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$answer=$this->answerList[$value][$j]['answer'];
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$answerNumber=$this->answerList[$value][$j]['a_id'];
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if($answer!=null) { // Wenn es eine Antwort gibt soll diese angezeigt werden
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echo "<tr>";
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echo "<td class='nr' valign='top' ></td>";
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echo"<td class='choice' valign='top'><input type='radio' value='$answerNumber' name='selectedAnswers[$value]' /></td>";
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if ($answer=='true') echo" <td class='answer' valign='top'>".Class_Answer_09."</td>";
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else if ($answer=='false') echo" <td class='answer' valign='top'>".Class_Answer_10."</td>";
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else echo" <td class='answer' valign='top'>$answer</td>";
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echo "<td class='symbol'></td>";
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echo "</tr>";
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}
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}
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echo "<tr class='padding'><td colspan='4' /></tr>";
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}
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function MultipleChoice($i,$value){
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for ($j=1;$j<=$this->questionList[$i]['numberOfAnswers'];$j++){ // Solange Schleife durchlaufen wie die maximale Anzahl der Antworten ist
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$answer=$this->answerList[$value][$j]['answer'];
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$answerNumber=$this->answerList[$value][$j]['a_id'];
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if($answer!=null){ // Wenn es eine Antwort gibt soll diese angezeigt werden
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echo "<tr>";
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echo "<td class='nr' valign='top' ></td>";
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echo "<td class='choice' valign='top'><input type='checkbox' class='quiz_options' value='$answerNumber' name='selectedAnswers[$value][]' /></td>";
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echo " <td class='answer' valign='top'> $answer </td>";
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echo "<td class='symbol'></td>";
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echo "</tr>";
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}
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}
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echo "<tr class='padding'><td colspan='4' /></tr>";
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}
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function randomizeArray($answerList,$value) {
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$max=count($answerList[$value]); // setze Maximum
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$index=range(1,$max); // Kreiire Array
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shuffle($index); // würfle array
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$copy= $answerList; // kopie erstellen
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for($i=0;$i<$max;$i++){
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$k=$index[$i];
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$answerList[$value][$i+1]=$copy[$value][$k]; // zuweisen
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}
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$_SESSION ['values'] ['answerList']= $answerList;
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return $answerList;
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}
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function FillInTheBlanks($i,$value,$question) {
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echo '<td class="answer" valign="top" colspan="2">';
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$correctAns=$this->question->getCorrectAnswerFillInTheBlanks($question); // korrekte Antworen ermitteln
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$numberOfAnswers=$this->questionList[$i]['numberOfAnswers'];
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for ($l=0;$l<count($correctAns);$l++){
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$addCorrect = array( 'q_id' => $value, 'a_id' => $correctAns[$l+1]['answer'],'answer' =>$correctAns[$l+1]['answer'],'correct'=>1,'blank'=>$correctAns[$l+1]['blank']);
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$numberOfAnswers=$numberOfAnswers+1; // Anzahl der Antworten erhöhen
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$this->answerList[$value][$numberOfAnswers]= $addCorrect ; // an richtiger Stelle einfügen
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}
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$this->answerList=$this->randomizeArray($this->answerList,$value);
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$addSlashes= preg_quote($question, '[^]'); // Slash hinzufügen wenn KLammer gefunden wird
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$array=explode('\\',$addSlashes); // String teilen
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for($k=0;$k<count($array);$k++){
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if((strstr($array[$k],'['))){
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echo"<select name='selectedAnswers[$value][$k]' > ";
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for ($j=1;$j<=$numberOfAnswers;$j++){ // Solange Schleife durchlaufen wie die maximale Anzahl der Antworten ist
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$answer=$this->answerList[$value][$j]['answer'];
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$answerNumber=$this->answerList[$value][$j]['a_id'];
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//echo $this->answerList[$value][$j]['a_id'];
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echo"<option value='$answerNumber'>$answer</option>";
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}
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echo"</select>";
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}
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else if((strstr($array[$k],']'))){
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$array[$k]=str_replace("]",'', $array[$k]); // Klammer entfernen
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echo $array[$k];
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}
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else echo $array[$k];
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}
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echo "</td>";
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echo "<td class='symbol'></td>";
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echo "</tr>";
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echo "<tr class='padding'><td colspan='4' /></tr>";
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}
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function evaluateQuiz() {
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echo"<div>";
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echo "<fieldset>";
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echo "<legend>".Class_Quiz_03."</legend>\n";
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echo "<table class='table_show_quiz'>";
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for($i=1;$i<=count($this->questionList);$i++){
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$value= $this->questionList[$i]['q_id']; // Value den Wert der q_id geben
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$question=str_replace("\n", "<br>", $this->questionList[$i]['question']);
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echo "\n<tr>";
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echo"<td class='nr' valign='top' >".Global_08." $i : </td>";
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echo"<td class='question' colspan='3' >";
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if($this->questionList[$i]['qt_id']!=4){
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echo" $question </td> ";
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echo "</tr>";
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}
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$this->topicID=$this->questionList[$i]['t_id'];
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switch($this->questionList[$i]['qt_id']){
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case 1: {
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$this->evaluateSingleSelection($i,$value);
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break;
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}
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case 2: {
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$this->evaluateMultipleChoice($i,$value);
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break;
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}
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case 3: {
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$this->evaluateSingleSelection($i,$value); // Kann die selbe Maske verwendet werden
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break;
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}
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case 4:{
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//$this->getDBAnswers();
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$this->evaluateFillInTheBlanks($i,$value,$question);
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break;
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}
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}
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}
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echo "</table>";
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echo "</fieldset>";
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echo "</div>";
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$this->updateStatistic();
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$this->getTestResult();
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$this->createLearnProgress();
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}
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function evaluateSingleSelection($i,$value){
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for ($j=1;$j<=$this->questionList[$i]['numberOfAnswers'];$j++) { // Solange Schleife durchlaufen wie die maximale Anzahl der Antworten ist
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$answer=$this->answerList[$value][$j]['answer'];
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$answerNumber=$this->answerList[$value][$j]['a_id'];
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if($answer!=null) { // Wenn es eine Antwort gibt soll diese angezeigt werden
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echo "\n<tr>";
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echo "<td class='nr' valign='top' ></td>";
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echo "<td class='choice' valign='top'>";
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// Auswahl des Benutzers
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if(isset($this->selectedAnswers[$value]) && $this->selectedAnswers[$value]==$this->answerList[$value][$j]['a_id']) {
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echo"<input type='radio' value='$answerNumber' name='userChoice[$value]' class='quiz_options' checked='checked' disabled='disabled' />";
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} else {
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echo"<input type='radio' value='$answerNumber' name='userChoice[$value]'class='quiz_options' disabled='disabled' />";
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}
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echo "</td>";
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//richtige Antworten
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echo "<td class='choice' valign='top'>";
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if($this->answerList[$value][$j]['correct']==1) {
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echo"<input type='radio'class='quiz_options_correct' value='$answerNumber' disabled='disabled' name='correct[$value]' checked='checked' />";
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$show_class="answer correct";
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} else {
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echo"<input type='radio' class='quiz_options_correct' disabled='disabled' value='$answerNumber' name='correct[$value]' />";
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$show_class="answer false";
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}
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echo "</td>";
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if ($answer=='true') echo" <td class='$show_class' valign='top'>".Class_Answer_09."</td>";
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else if ($answer=='false') echo" <td class='$show_class' valign='top'>".Class_Answer_10."</td>";
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else echo"<td class='$show_class' valign='top'>$answer</td>";
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echo "<td class ='evaluate'></td>";
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echo"</tr>";
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}
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if (isset($this->selectedAnswers[$value]) && isset($this->answerList[$value][$j]['correct']) &&
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$this->selectedAnswers[$value]==$this->answerList[$value][$j]['a_id'] && $this->answerList[$value][$j]['correct']==1) {
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$correct[]=1;
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}
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}
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$this->showDescription($i);
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if(!isset($correct)) $correct[]=0;
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$this->checkAnswers($correct,$value);
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}
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function evaluateMultipleChoice($i,$value) {
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for ($j=1;$j<=$this->questionList[$i]['numberOfAnswers'];$j++){ // Solange Schleife durchlaufen wie die maximale Anzahl der Antworten ist
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for($k=0;$k<$this->questionList[$i]['numberOfAnswers'];$k++){ // markieren welche Antworten der Benutzer ausgewählt hat
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if(isset($this->selectedAnswers [$value][$k]) && $this->selectedAnswers [$value][$k]!=null){ // wenn die Antwort nicht null ist
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if($this->selectedAnswers [$value][$k]==$this->answerList[$value][$j]['a_id'])$checked [$j]=1;
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else if(!isset($checked[$j]) || !$checked [$j]) $checked [$j]=0;
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}
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}
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}
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for ($j=1;$j<=$this->questionList[$i]['numberOfAnswers'];$j++){ // antworten die der Benutzer ausewählt hat ausgeben
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echo "\n<tr>";
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echo "<td class='nr' valign='top' ></td>";
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echo "<td class='choice' valign='top'>";
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$answer=$this->answerList[$value][$j]['answer'];
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$answerNumber=$this->answerList[$value][$j]['a_id'];
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if (!isset($checked[$j])) $checked[$j] = 0;
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if($checked[$j]==1) echo"<input type='checkbox' class='quiz_options' disabled='disabled' value='$answerNumber' checked='checked' name='userChoice[$value]' />";
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else if ($checked[$j]==0) echo"<input type='checkbox' class='quiz_options' disabled='disabled' value='$answerNumber' name='userChoice[$value]' />";
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echo "</td>";
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//richtige Antworten ausgeben
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echo "<td class='choice' valign='top'>";
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if($this->answerList[$value][$j]['correct']==1) {
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echo"<input type='checkbox'class='quiz_options_correct' value='$answerNumber' disabled='disabled' name='correct[$value]' checked='checked' />";
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$show_class = "answer correct";
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} else {
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echo"<input type='checkbox' class='quiz_options_correct' disabled='disabled' value='$answerNumber' name='correct[$value]' />";
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$show_class = "answer false";
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}
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echo "</td>";
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echo"<td class='$show_class' valign='top'> $answer </td>";
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echo "<td class ='evaluate'></td>";
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echo"</tr>";
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if(($this->answerList[$value][$j]['correct']==1) && ($checked [$j]==1)){ //Prüfung auf Richtigkeit
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$correct[$j]=1;
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unset($this->answerList[$value][$j]);
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} else if(($this->answerList[$value][$j]['correct']==1)&& ($checked [$j]==0))$correct[$j]=0;
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else if(($this->answerList[$value][$j]['correct']==0) && ($checked [$j]==1))$correct[$j]=0;
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}
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$this->showDescription($i);
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$this->checkAnswers($correct,$value);
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}
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function evaluateFillInTheBlanks($i,$value,$question){
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$addSlashes= preg_quote($question, '[^]'); // Slash hinzufügen wenn KLammer gefunden wird
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$array=explode('\\',$addSlashes); // String teilen
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// Was Benutzer markiert hat
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for($k=0;$k<count($array);$k++){
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if((strstr($array[$k],'['))){
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$array[$k]=str_replace("[",'', $array[$k]); // Klammer entfernen
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for ($j=1;$j<=count($this->answerList[$value]);$j++){ // antworten die der Benutzer ausewählt hat ausgeben
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$answer=$this->answerList[$value][$j]['answer']; // Amtwort wird zugewiesen
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if($this->selectedAnswers[$value][$k]==$this->answerList[$value][$j]['a_id']){
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echo " <input name='[$i]' readonly='readonly' size='20' value='$answer' />";
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if(isset($this->answerList[$value][$j]['blank']) && $this->answerList[$value][$j]['blank']==$k) $correct[]=1;
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else $correct[]=0;
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break;
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}
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}
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} else if((strstr($array[$k],']'))){
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$array[$k]=str_replace("]",'', $array[$k]); // Klammer entfernen
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echo $array[$k];
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} else echo $array[$k];
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}
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echo "</td>";
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echo "</tr>";
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echo "\n<tr>";
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echo "<td class='nr' valign='top' ></td>";
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echo "<td class='question' colspan='3'>";
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// Was richtig ist
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$addSlashes= preg_quote($question, '[^]'); // Slash hinzufügen wenn KLammer gefunden wird
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$array=explode('\\',$addSlashes); // String teilen
|
|
//echo" <div id=\"quiz_fill_in_the_blank\" >";
|
|
|
|
for($k=0;$k<count($array);$k++){
|
|
if((strstr($array[$k],'['))){
|
|
$array[$k]=str_replace("[",'', $array[$k]); // Klammer entfernen
|
|
echo " <input name='[$i]' readonly='readonly' size='20' value='$array[$k]' />";
|
|
} else if((strstr($array[$k],']'))) {
|
|
$array[$k]=str_replace("]",'', $array[$k]); // Klammer entfernen
|
|
echo $array[$k];
|
|
} else echo $array[$k];
|
|
}
|
|
echo "</td>";
|
|
echo "</tr>";
|
|
|
|
$this->showDescription($i);
|
|
$this->checkAnswers($correct,$value);
|
|
}
|
|
|
|
function checkAnswers($correct,$value) {
|
|
$check = in_array(0, $correct); // Prüfen ob im Array der Wert 0 ist, denn dann wurde mindestens eine Antwort falsch beantwortet
|
|
echo "\n<tr>";
|
|
if(!$check)echo"<td class='symbol' colspan='7'><img src='images/correct.png' alt='' /></td>";
|
|
else {
|
|
$this->wrongQuestions[]=$value;
|
|
echo"<td class='symbol' colspan='7'><img src='images/wrong.png' alt='' /></td>";
|
|
}
|
|
echo "</tr>";
|
|
}
|
|
|
|
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'<p class="centered"> '.Global_05." : <br />";
|
|
global $questionlimit;
|
|
$questionlimit =$this->questionLimit;
|
|
echo" ".Class_Quiz_04." $correct / $this->questionLimit <br />";
|
|
echo" ".Class_Quiz_05." <b>$this->rawToPass %</b> ";
|
|
echo "<br /> ".Class_Quiz_06." <b>".$this->percentTest." % </b> ".Class_Quiz_07." <b>$value</b> <br /></p>";
|
|
//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 '<br /><p class="centered">'.Class_Quiz_10_AnonymousCert."</p>";
|
|
} else {
|
|
echo "<form class='info' action='index.php?site=start_test&action=requestCert' method='post'>";
|
|
echo "<input type='hidden' name='t_id' value='$this->topicID' />";
|
|
echo "<input name='submit' class='Button_middle' type='submit' value='".Class_Quiz_11_RequestCert."' />";
|
|
echo "</form>";
|
|
}
|
|
}
|
|
}
|
|
|
|
function showDescription($i){
|
|
if(isset($_SESSION['values']['questionList'][$i]['description_text'])){
|
|
// Ausgabe der Beschreibung
|
|
echo "\n<tr>";
|
|
echo "<td class='nr'></td>";
|
|
echo"<td class='answer description' colspan='4'>".$_SESSION['values']['questionList'][$i]['description_text']."</td>";
|
|
echo "<td class ='evaluate'></td>";
|
|
echo "</tr>";
|
|
}
|
|
}
|
|
}
|
|
|
|
?>
|