cats/classes/Answer.class.php

487 lines
17 KiB
PHP
Executable file

<?php
class Answer {
var $answerList;
var $type;
var $changedAnswers;
var $answersCorrect;
var $missing;
var $action;
function Answer(){ // Konstruktor
$this->answerList=0;
$this->type=0;
$this->changedAnswers=0;
$this->answersCorrect=0;
$this->missing=0;
$this->answerList = array();
$this->action="index.php?site=collect_question&amp;action=setAnswers";
}
function setChangedAnswers($changed_answers){
$this->changedAnswers=$changed_answers;
}
function setQuestionType($type) {
$this->type=$type;
}
function setMissing() {
$this->missing=true;
}
function setAnswerType($type) {
$this->type=$type;
}
function setType(){
switch ($this->type) {
case 1 : { // Einfachauswahl
$this->formHead();
$this->ShowFormSingleSelection();
break;
}
case 2 : { // Mehrfachauswahl
$this->formHead();
$this->ShowFormMultipleChoice();
break;
}
case 3 : { //Richtig/Falsch
$this->formHead();
$this->ShowFormCorrectWrong();
break;
}
case 4 : { //Lückentext mit Auswahl
$this->ShowFormFillInTheBlanks();
break;
}
}
}
function showAnswers() {
echo"<form action='index.php?site=topic&amp;action=updateAnswers&amp;q_id=".$_SESSION['values']['question']['q_id']."&amp;type=".$this->type."' method='post'>";
echo "<fieldset >";
echo " <legend>".Class_Answer_01." </legend> ";
echo "<table class='table_show_answers'>";
for ($i=0;$i<count($this->answerList);$i++){
echo "<tr>";
echo "<td class='leftColumn'>";
if ($this->answerList[$i]['correct']==1)echo "<a class='showStatus' href='?site=topic&amp;action=updateAnswers&amp;q_id=".$_SESSION['values']['question']['q_id']."&amp;a_id=".$this->answerList[$i]['a_id']."'><img src='images/correct_small.png' class='linkimage' alt='' /></a>";
else echo "<a class='showStatus' href='?site=topic&amp;action=updateAnswers&amp;q_id=".$_SESSION['values']['question']['q_id']."&amp;a_id=".$this->answerList[$i]['a_id']."'><img src='images/wrong_small.png' class='linkimage' alt='' /></a>";
echo "</td>";
echo" <td class='answers'><textarea name='change[$i]' readonly='readonly' class='TextField' rows='1' cols='79' >".stripslashes($this->answerList[$i]['answer'])."</textarea> </td>";
echo"</tr>";
}
echo "<tr >";
echo "<td class='leftColumn'></td>";
if($this->type!=3)echo"<td class='Button_row'><input type='submit' class='Button_rightColumn' name='editAnsw' value='".Button_13."'/></td>";
echo "</tr>";
echo "</table>";
echo "</fieldset>";
echo"</form>";
}
function setAnswersCorrect($correctAnswers){
$this->answersCorrect=$correctAnswers;
}
function setQuestionID($q_id){
$this->quID= $q_id;
}
function getAnswers(){
$sql="SELECT a_id, answer, correct FROM answers WHERE q_id=".intval($_SESSION['values']['question']['q_id'])."";
$query= mysql_query($sql);
$i=0; // zähler
while($answers =mysql_fetch_array($query ,MYSQL_BOTH )){
$this->answerList[$i]['a_id']=$answers['a_id']; // in arra speichern
$this->answerList[$i]['answer']=$answers['answer'];
$this->answerList[$i]['correct']=$answers['correct'];
$i++;
}
$_SESSION['values']['answerList']=$this->answerList;
}
function setAnswerList(){
$this->answerList=$_SESSION ['values']['answerList'];
}
function changeCorrect($a_id){
switch ($this->type){
case 1 : { // Einfachauswahl nur eine Antwort darf richtig sein
for ($i=0;$i<count($this->answerList);$i++){
if($this->answerList[$i]['a_id']==$a_id){
$this->answerList[$i] ['correct']=1;
}
else $this->answerList [$i] ['correct']=0;
}
$_SESSION ['values']['answerList']=$this->answerList;
break;
}
case 2: { // Mehrfachauswahl mehrere Antworten können richtig sein
$copy=$this->answerList;
for ($i=0;$i<count($this->answerList);$i++){
if($copy [$i]['a_id']==$a_id){
if($copy[$i]['correct']==1) $copy [$i] ['correct']=0;
else $copy [$i] ['correct']=1;
}
}
for ($i=0;$i<count($this->answerList);$i++){
if($copy[$i]['correct']==1)$check[$i]=1;
else $check[$i]=0;
}
$check_answers_true = in_array(1,$check);
$check_answers_false= in_array (0,$check);
if(($check_answers_true) && ($check_answers_false)) $this->answerList=$copy;
else echo " <h4>".Class_Answer_08."</h4> ";
break;
}
case 3: { // Richtig Falsch
for ($i=0;$i<count($this->answerList);$i++){
if($this->answerList[$i]['a_id']==$a_id){
if( $this->answerList[$i] ['correct']==1) $this->answerList[$i] ['correct']=0;
else $this->answerList[$i] ['correct']=1;
}
else{
if( $this->answerList[$i] ['correct']==1) $this->answerList[$i] ['correct']=0;
else $this->answerList[$i] ['correct']=1;
}
}
break;
}
}
}
function updateChangedAnswers() {
$this->answerList=$_SESSION['values']['answerList'];
for ($i=0;$i<count($this->answerList);$i++){
$help = strcmp($this->answerList [$i] ['answer'],$this->changedAnswers[$i] ); // Vergleich der Antworten
if($help!=0) { // wenn ein Unterschied besteht dann Update
$this->answerList [$i] ['answer']=$this->changedAnswers[$i]; // Zur späteren korrekten Anzeige Wert überschreiben
$sql="UPDATE answers SET answer='".mysql_real_escape_string($this->changedAnswers[$i])."', correct='".intval($this->answerList [$i] ['correct'])."' WHERE a_id=".intval($this->answerList [$i] ['a_id'])."";
$query = mysql_query($sql);
}
}
}
function updateTruthFalse(){
for ($i=0;$i<count($this->answerList);$i++){
$sql="UPDATE answers SET answer='".mysql_real_escape_string($this->answerList [$i] ['answer'])."', correct='".intval($this->answerList [$i] ['correct'])."' WHERE a_id=".intval($this->answerList [$i] ['a_id'])."";
$query = mysql_query($sql);
}
}
function delAllAnswers($questionArray) {
for ($i=0;$i<count($questionArray);$i++){
$q_id=$questionArray[$i+1]['q_id'];
$this->delAnswers ($q_id);
}
}
function delAnswers ($q_id){
$sql="DELETE FROM answers WHERE q_id=".intval($q_id)."";
$query = mysql_query($sql);
if (!$query){
$error=mysql_errno() ;
}
}
function addAnswer() {
$addAnswer = array( 'id' => 0, 'answer' => '','correct' => 0);
$this->answerList[] = $addAnswer;
}
function minusAnswer(){
if(count($this->answerList)>2){ // Prüfen ob mindestens 2 Antwortmöglichkeiten
$delAnswer = array_pop($this->answerList);
}
}
function formHead(){
echo "<form action='".$this->action."' method='post'>";
echo "<fieldset >";
echo"<legend>".Class_Answer_02." </legend>";
echo "<table class='table_show_answers'>";
echo "<tr>";
echo"<td class='leftColumn'>".Global_03." </td>";
echo"<td class='answers'>".Class_Answer_03." </td>";
echo "</tr>";
}
function ShowFormSingleSelection(){
for($i=0;$i<count($this->answerList);$i++){
echo "<tr>";
echo"<td class='leftColumn'>";
if (isset($this->answerList[$i]['id'])) {
printf('<input type="hidden" name="id[]" value="%s" />',
$this->answerList[$i]['id']);
} else {
printf('<input type="hidden" name="id[]" value="" />');
}
if ($this->missing) {
$extrastyle = ' marked';
} else {
$extrastyle = '';
}
if ($this->answerList[$i]['correct'] == 1) {
printf("<input class='left_answer_small%s' type='radio' checked='checked' value='%s' name='correct[]' />", $extrastyle, $i);
} else {
printf('<input class="left_answer_small%s" type="radio" value="%s" name="correct[]" />', $extrastyle, $i);
}
echo "</td>";
printf("<td class='answers'><textarea name='answer[]' class='TextField%s' rows='1' cols='79' >%s</textarea></td>", $extrastyle, stripslashes($this->answerList[$i]['answer']));
echo"</tr>";
}
$_SESSION ['values']['answerList']=$this->answerList;
echo "<tr>";
echo"<td class='leftColumn'></td>";
echo"<td class='Button_row'><input type='submit' class='Button_left' name='addAnsw' value='".Button_14."'/>";
echo"<input type='submit' class='Button_rightColumn' name='minAnsw' value='".Button_15."'/></td>";
echo "</tr>";
echo "<tr>";
echo"<td class='leftColumn'></td>";
echo" <td class='Button_row'><input name='submit' class='Button_rightColumn' type='submit' value='".Button_11."'/> </td>";
echo "</tr>";
echo"</table>";
echo"</fieldset>";
echo"</form>";
}
function ShowFormMultipleChoice(){
$i = 0;
foreach( $this->answerList as $answer ){
echo "<tr><td class='leftColumn'>";
if (isset($this->answerList[$i]['id'])) {
printf('<input type="hidden" name="id[]" value="%s" />',
$this->answerList[$i]['id']);
} else {
printf('<input type="hidden" name="id[]" value="" />');
}
if ($this->missing == true) {
$extrastyle = ' marked';
} else {
$extrastyle = '';
}
if ($this->answerList[$i]['correct'] == 1) {
printf("<input class='left_answer_small%s' type='checkbox' checked='checked' value='%s' name='correct[]' />", $extrastyle, $i);
} else {
printf("<input class='left_answer_small%s' type='checkbox' value='%s' name='correct[]' />", $extrastyle, $i);
}
echo "</td>";
printf("<td class='answers'><textarea name='answer[]' class='TextField%s' rows='1' cols='79' >%s</textarea></td>", $extrastyle, stripslashes($this->answerList[$i]['answer']));
echo"</tr>";
$i++;
}
echo "<tr>";
echo"<td class='leftColumn'></td>";
echo"<td class='Button_row'><input name='addAnsw' class='Button_rightColumn' type='submit' value='".Button_14."'/> ";
echo"<input type='submit' class='Button' name='minAnsw' value='".Button_15."'/></td>";
echo"</tr>";
echo "<tr>";
echo"<td class='leftColumn'></td>";
echo"<td class='Button_row'><input name='submit' class='Button_rightColumn' type='submit' value='".Button_11."' /></td> ";
echo "</tr></table>";
echo "</fieldset>";
echo"</form>";
}
function ShowFormCorrectWrong(){
$answerPossible=array("".Class_Answer_09."", "".Class_Answer_10."");
$i = 0;
foreach( $this->answerList as $answer ) {
echo "<tr><td class='leftColumn'>";
printf('<input type="hidden" name="id[]" value="%s" />',
$this->answerList[$i]['id']);
if ($this->missing==true) {
$extrastyle = ' marked';
} else {
$extrastyle = '';
}
if ($this->answerList[$i]['correct']==1) {
printf("<input class='left_answer_small%s' type='radio' checked='checked' value='%s' name='correct[]' />", $extrastyle, $i);
} else {
printf("<input class='left_answer_small%s' type='radio' value='%s' name='correct[]' />", $extrastyle, $i);
}
echo "</td>";
printf("<td class='answers'><textarea name='answer[]' class='TextField' rows='1' cols='79' >%s</textarea></td>", stripslashes($answerPossible[$i]));
echo "</tr>";
$i++;
}
echo "<tr>";
echo"<td class='leftColumn'></td>";
echo" <td class='Button_row'><input name='submit' class='Button_rightColumn' type='submit' value='".Button_11."'/> </td>";
echo "</tr>";
echo"</table>";
echo "</fieldset>";
echo"</form>";
}
function ShowFormFillInTheBlanks(){
echo "<form action='index.php?site=collect_question&amp;action=setAnswers&amp;questionId=".$_SESSION['values']['question']['q_id']."' method='post'>";
echo "<fieldset >";
echo"<legend>".Antworten." </legend>";
echo "<table class='table_show_answers'>";
$i = 0;
foreach($this->answerList as $answer ){
echo "<tr>";
echo"<td class='leftColumn'>";
printf('<input type="hidden" name="id[]" value="%s" />',
$this->answerList[$i]['id']);
echo"</td>";
if($this->missing==true){
echo" <td class='answers'><textarea name='answer[]' class='TextField marked' rows='1' cols='79' >".stripslashes($this->answerList[$i]['answer'])."</textarea> </td>";
}
else {
echo" <td class='answers'><textarea name='answer[]' class='TextField' rows='1' cols='79' >".stripslashes($this->answerList[$i]['answer'])."</textarea> </td>";
}
$i++;
echo"</tr>";
}
echo "<tr>";
echo"<td class='leftColumn'></td>";
echo" <td class='Button_row'><input type='submit' class='Button_left' name='addAnsw' value='".Button_14."'/>";
echo"<input type='submit' class='Button' name='minAnsw' value='".Button_15."'/></td>";
echo "</tr>";
echo "<tr>";
echo"<td class='leftColumn'></td>";
echo" <td class='Button_row'><input name='submit' class='Button_rightColumn' type='submit' value='".Button_11."'/></td> ";
echo"</tr>";
echo"</table>";
echo "</fieldset>";
echo"</form>";
}
function controlAnswers(){
for($i=0;$i<count( $this->answerList);$i++){
for($j=1;$j<=count($this->answersCorrect);$j++){
$compare=$this->answersCorrect[$j]['answer'];
$help=strcmp($this->answerList[$i]['answer'], $compare) ;
if($help==0){
$this->answerList[$i]['answer']='';
$foundIncorrect[]=1;
}
}
}
if(count($foundIncorrect)>0) {
return false;
}
else return true;
}
function checkNumberOfAnswers(){
for($i=0;$i<count( $this->answerList);$i++){
$help=strcmp($this->answerList[$i]['answer'],'');
if($help!=0)$check[]=1;
}
if(count($check)>=2)return true;
else return false;
}
function checkAnswer(){
if(($this->type==4) && ($this->controlAnswers()==true)||$this->type!=4){
if(($this->pruefungCorrect()==true) || ($this->type==4)){ // pruefung ob eine Frage als richtig markiert wurde außer bei Lückentext
if($this->checkNumberOfAnswers()==true) {
return 1;
}
else {
echo"<h5><br />".Class_Answer_04."<br /></h5>";
if($this->type==4)echo"<h5>".Class_Answer_04."<br /></h5>";
$this->setMissing();
$this->setType();
}
}
else{
if( $this->type !=3)echo"<h5>".Class_Answer_05." <br /></h5>";
else echo"<h5>".Class_Answer_06."</h5> ";
$this->setMissing();
$this->setType(); // wenn Antwort nicht ausgefüllt dann zurück zur Maske
}
}else {
echo"<h5>".Class_Answer_07."<br /></h5>";
$this->setMissing();
$this->setType();}
return 0;
}
function saveAnswer(){ // Fehlt noch Prüfung nach Fragetyp etc // correct wird noch nicht gescheit angezeigt
if(($this->type==4) && ($this->controlAnswers()==true)||$this->type!=4){
if(($this->pruefungCorrect()==true) || ($this->type==4)){ // pruefung ob eine Frage als richtig markiert wurde außer bei Lückentext
if($this->checkNumberOfAnswers()==true) {
$sql_del="DELETE FROM answers WHERE q_id=".intval($_SESSION['values']['question']['q_id'])."";
$ok_del= mysql_query($sql_del);
for ($i=0;$i<count($this->answerList);$i++){
$answer=$this->answerList[$i]['answer'];
$correct=$this->answerList[$i]['correct'];
if($answer!=''){ // wenn in antwort was drin steht
if($answer == Class_Answer_09)$answer='true';
else if($answer == Class_Answer_10) $answer='false';
$sql="INSERT INTO answers (q_id,answer,correct) VALUES (".intval($_SESSION['values']['question']['q_id']).",'".mysql_real_escape_string($answer)."',".intval($correct).")";
$ok= mysql_query($sql);
}
}
unset ($_SESSION ['values']['answerList']);
return true;
}
else {
echo"<h5><br />".Class_Answer_04."<br /></h5>";
if($this->type==4)echo"<h5>".Class_Answer_04."<br /></h5>";
$this->setMissing();
$this->setType();
}
}
else{
if( $this->type !=3)echo"<h5>".Class_Answer_05." <br /></h5>";
else echo"<h5>".Class_Answer_06."</h5> ";
$this->setMissing();
$this->setType(); // wenn Antwort nicht ausgefüllt dann zurück zur Maske
}
}else {
echo"<h5>".Class_Answer_07."<br /></h5>";
$this->setMissing();
$this->setType();}
return false;
}
function pruefungCorrect(){
$this->answerList=$_SESSION['values']['answerList'];
for ($i=0;$i<=count($this->answerList);$i++) {
if($this->answerList[$i]['correct']==1){
return true; // wenn mindestens eine Frage als korrekt markiert ist dann speichere
}
}
return false;
}
function updateAnswers($q_id) {
for($i=0;$i<count($this->answerList);$i++){
$sql="INSERT INTO answers (q_id,answer,correct) VALUES (".intval($q_id).",'".mysql_real_escape_string($this->answerList[$i]['answer'])."','".intval($this->answerList[$i]['correct'])."')";
$ok= mysql_query($sql);
}
}
}
?>