chamilo-lms2/main/exercice/answer_admin.inc.php

<?php
/* For licensing terms, see /license.txt */
// YW: 20110209: Script depredated?
/**
 * 	This script allows to manage answers. It is included from the script admin.php
 * 	@package chamilo.exercise
 * 	@author Olivier Brouckaert
 * 	@version $Id: answer_admin.inc.php 21361 2009-06-11 04:08:58Z ivantcholakov $
 */

/**
 * Code
 */
use \ChamiloSession as Session;

if (!is_object($objQuestion)) {
    $objQuestion = Question :: read($_GET['modifyAnswers']);
}

$questionName = $objQuestion->selectTitle();
$answerType = $objQuestion->selectType();
$pictureName = $objQuestion->selectPicture();

$debug = 0; // debug variable to get where we are

$okPicture = empty($pictureName) ? false : true;

// if we come from the warning box "this question is used in serveral exercises"
if ($modifyIn) {
    if ($debug > 0) {
        echo '$modifyIn was set' . "<br />\n";
    }
    // if the user has chosed to modify the question only in the current exercise
    if ($modifyIn == 'thisExercise') {
        // duplicates the question
        $questionId = $objQuestion->duplicate();

        // deletes the old question
        $objQuestion->delete($exerciseId);

        // removes the old question ID from the question list of the Exercise object
        $objExercise->removeFromList($modifyAnswers);

        // adds the new question ID into the question list of the Exercise object
        $objExercise->addToList($questionId);

        // construction of the duplicated Question
        $objQuestion = Question::read($questionId);

        // adds the exercise ID into the exercise list of the Question object
        $objQuestion->addToList($exerciseId);

        // copies answers from $modifyAnswers to $questionId
        $objAnswer->duplicate($questionId);

        // construction of the duplicated Answers

        $objAnswer = new Answer($questionId);
    }
    if ($answerType == UNIQUE_ANSWER || $answerType == MULTIPLE_ANSWER || $answerType == MULTIPLE_ANSWER_COMBINATION || $answerType == GLOBAL_MULTIPLE_ANSWER) {
        $correct = unserialize($correct);
        $reponse = unserialize($reponse);
        $comment = unserialize($comment);
        $weighting = unserialize($weighting);
    } elseif ($answerType == MATCHING) {
        $option = unserialize($option);
        $match = unserialize($match);
        $sel = unserialize($sel);
        $weighting = unserialize($weighting);
    } elseif ($answerType == FREE_ANSWER) {
        $reponse = unserialize($reponse);
        $comment = unserialize($comment);
        $free_comment = $comment;
        $weighting = unserialize($weighting);
    } elseif ($answerType == ORAL_EXPRESSION) {
        $reponse = unserialize($reponse);
        $comment = unserialize($comment);
        $free_comment = $comment;
        $weighting = unserialize($weighting);
    } elseif ($answerType == HOT_SPOT || $answerType == HOT_SPOT_ORDER || $answerType == HOT_SPOT_DELINEATION) {
        $color = unserialize($color);
        $reponse = unserialize($reponse);
        $comment = unserialize($comment);
        $weighting = unserialize($weighting);
        $hotspot_coordinates = unserialize($hotspot_coordinates);
        $hotspot_type = unserialize($hotspot_type);
    } else {
        //fill in blanks
        $reponse = unserialize($reponse);
        $comment = unserialize($comment);
        $blanks = unserialize($blanks);
        $weighting = unserialize($weighting);
    }
    unset($buttonBack);
}

// the answer form has been submitted
if ($submitAnswers || $buttonBack) {
    if ($debug > 0) {
        echo '$submitAnswers or $buttonBack was set' . "<br />\n";
    }
    if ($answerType == UNIQUE_ANSWER || $answerType == MULTIPLE_ANSWER || $answerType == MULTIPLE_ANSWER_COMBINATION || $answerType == GLOBAL_MULTIPLE_ANSWER) {
        if ($debug > 0) {
            echo '&nbsp;&nbsp;$answerType is UNIQUE_ANSWER or MULTIPLE_ANSWER' . "<br />\n";
        }
        $questionWeighting = $nbrGoodAnswers = 0;

        for ($i = 1; $i <= $nbrAnswers; $i++) {
            $reponse[$i] = trim($reponse[$i]);
            $comment[$i] = trim($comment[$i]);
            $weighting[$i] = intval($weighting[$i]);

            if ($answerType == UNIQUE_ANSWER) {
                if ($debug > 0) {
                    echo str_repeat('&nbsp;', 4) . '$answerType is UNIQUE_ANSWER' . "<br />\n";
                }
                $goodAnswer = ($correct == $i) ? 1 : 0;
            } else {
                $goodAnswer = $correct[$i];
            }

            if ($goodAnswer) {
                $nbrGoodAnswers++;

                // a good answer can't have a negative weighting
                $weighting[$i] = abs($weighting[$i]);

                // calculates the sum of answer weighting only if it is different from 0 and the answer is good
                if ($weighting[$i]) {
                    $questionWeighting+=$weighting[$i];
                }
            } elseif ($answerType == MULTIPLE_ANSWER || $answerType == GLOBAL_MULTIPLE_ANSWER) {
                if ($debug > 0) {
                    echo str_repeat('&nbsp;', 4) . '$answerType is MULTIPLE_ANSWER' . "<br />\n";
                }
                // a bad answer can't have a positive weighting
                $weighting[$i] = 0 - abs($weighting[$i]);
            }
            // checks if field is empty
            if (empty($reponse[$i]) && $reponse[$i] != '0') {
                $msgErr = get_lang('GiveAnswers');

                // clears answers already recorded into the Answer object
                $objAnswer->cancel();

                break;
            } else {
                // adds the answer into the object
                $objAnswer->createAnswer($reponse[$i], $goodAnswer, $comment[$i], $weighting[$i], $i);
                //added
                //if($_REQUEST['myid']==1)
                $mainurl = "admin.php";
                //	else
                //  $mainurl="question_pool.php";
                ?>
                <script>
                    window.location.href='<?php echo $mainurl; ?>';
                </script>
                <?php
            }
        }  // end for()

        if (empty($msgErr)) {
            if (!$nbrGoodAnswers) {
                $msgErr = ($answerType == UNIQUE_ANSWER) ? get_lang('ChooseGoodAnswer') : get_lang('ChooseGoodAnswers');

                // clears answers already recorded into the Answer object
                $objAnswer->cancel();
            }
            // checks if the question is used in several exercises
            elseif ($exerciseId && !$modifyIn && $objQuestion->selectNbrExercises() > 1) {
                $usedInSeveralExercises = 1;
            } else {
                // saves the answers into the data base
                $objAnswer->save();

                // sets the total weighting of the question
                $objQuestion->updateWeighting($questionWeighting);
                $objQuestion->save($exerciseId);

                $editQuestion = $questionId;

                unset($modifyAnswers);
            }
        }
    } elseif ($answerType == FILL_IN_BLANKS) {
        if ($debug > 0) {
            echo str_repeat('&nbsp;', 2) . '$answerType is FILL_IN_BLANKS' . "<br />\n";
        }
        $reponse = trim($reponse);

        if (!$buttonBack) {
            if ($debug > 0) {
                echo str_repeat('&nbsp;', 4) . '$buttonBack is not set' . "<br />\n";
            }
            if ($setWeighting) {
                $blanks = unserialize($blanks);

                // checks if the question is used in several exercises
                if ($exerciseId && !$modifyIn && $objQuestion->selectNbrExercises() > 1) {
                    $usedInSeveralExercises = 1;
                } else {
                    // separates text and weightings by '::'
                    $reponse.='::';

                    $questionWeighting = 0;

                    foreach ($weighting as $val) {
                        // a blank can't have a negative weighting
                        $val = abs($val);

                        $questionWeighting+=$val;

                        // adds blank weighting at the end of the text
                        $reponse.=$val . ',';
                    }

                    $reponse = api_substr($reponse, 0, -1);

                    $objAnswer->createAnswer($reponse, 0, '', 0, '');
                    $objAnswer->save();
                    //added
                    //if($_REQUEST['myid']==1)
                    $mainurl = "admin.php";
                    //	else
                    //  $mainurl="question_pool.php";
                    ?>
                    <script>
                        window.location.href='<?php echo $mainurl; ?>';
                    </script>
                    <?php
                    // sets the total weighting of the question
                    $objQuestion->updateWeighting($questionWeighting);
                    $objQuestion->save($exerciseId);

                    $editQuestion = $questionId;

                    unset($modifyAnswers);
                }
            }
            // if no text has been typed or the text contains no blank
            elseif (empty($reponse)) {
                $msgErr = get_lang('GiveText');
            } elseif (!api_ereg('\[.+\]', $reponse)) {
                $msgErr = get_lang('DefineBlanks');
            } else {
                // now we're going to give a weighting to each blank
                $setWeighting = 1;

                unset($submitAnswers);

                // removes character '::' possibly inserted by the user in the text
                $reponse = str_replace('::', '', $reponse);

                // we save the answer because it will be modified
                //$temp=$reponse;
                $temp = $reponse;

                /* // Deprecated code.
                  // 1. find everything between the [tex] and [/tex] tags
                  $startlocations=api_strpos($temp,'[tex]');
                  $endlocations=api_strpos($temp,'[/tex]');

                  if($startlocations !== false && $endlocations !== false)
                  {
                  $texstring=api_substr($temp,$startlocations,$endlocations-$startlocations+6);

                  // 2. replace this by {texcode}
                  $temp=str_replace($texstring,"{texcode}",$temp);
                  }
                 */

                // blanks will be put into an array
                $blanks = array();

                $i = 1;

                // the loop will stop at the end of the text
                while (1) {
                    // quits the loop if there are no more blanks
                    if (($pos = api_strpos($temp, '[')) === false) {
                        break;
                    }

                    // removes characters till '['
                    $temp = api_substr($temp, $pos + 1);

                    // quits the loop if there are no more blanks
                    if (($pos = api_strpos($temp, ']')) === false) {
                        break;
                    }

                    // stores the found blank into the array
                    $blanks[$i++] = api_substr($temp, 0, $pos);

                    // removes the character ']'
                    $temp = api_substr($temp, $pos + 1);
                }
            }
        } else {
            unset($setWeighting);
        }
    } elseif ($answerType == FREE_ANSWER) {
        if ($debug > 0) {
            echo str_repeat('&nbsp;', 2) . '$answerType is FREE_ANSWER' . "<br />\n";
        }
        if (empty($free_comment)) {
            $free_comment = $_POST['comment'];
        }
        if (empty($weighting)) {
            $weighting = $_POST['weighting'];
            $weightingtemp = $_POST['weighting'];
        }

        if (!$buttonBack) {
            if ($debug > 0) {
                echo str_repeat('&nbsp;', 4) . '$buttonBack is not set' . "<br />\n";
            }
            if ($setWeighting) {
                if ($debug > 0) {
                    echo str_repeat('&nbsp;', 6) . '$setWeighting is set' . "<br />\n";
                }
                // checks if the question is used in several exercises
                if ($exerciseId && !$modifyIn && $objQuestion->selectNbrExercises() > 1) {
                    $usedInSeveralExercises = 1;
                } else {

                    $objAnswer->createAnswer('', 0, $free_comment, $weighting, '');
                    $objAnswer->save();
                    // sets the total weighting of the question
                    $objQuestion->updateWeighting($weighting);
                    $objQuestion->save($exerciseId);

                    $editQuestion = $questionId;

                    unset($modifyAnswers); //added
                    //if($_REQUEST['myid']==1)
                    $mainurl = "admin.php";
                    //	else
                    //  $mainurl="question_pool.php";
                    ?>
                    <script>
                        window.location.href='<?php echo $mainurl; ?>';
                    </script>
                    <?php
                }
            }
            // if no text has been typed or the text contains no blank
            elseif (empty($free_comment)) {
                if ($debug > 0) {
                    echo str_repeat('&nbsp;', 6) . '$free_comment is empty' . "<br />\n";
                }
                $msgErr = get_lang('GiveText');
            }
            /* elseif(!ereg('\[.+\]',$reponse))
              {
              $msgErr=get_lang('DefineBlanks');
              } */ else {
                if ($debug > 0) {
                    echo str_repeat('&nbsp;', 6) . '$setWeighting is not set and $free_comment is not empty' . "<br />\n";
                }

                // now we're going to give a weighting to each blank
                $setWeighting = 1;

                unset($submitAnswers);
            }
        } else {
            unset($setWeighting);
        }
    } elseif ($answerType == MATCHING) {
        if ($debug > 0) {
            echo str_repeat('&nbsp;', 2) . '$answerType is MATCHING' . "<br />\n";
        }
        for ($i = 1; $i <= $nbrOptions; $i++) {
            $option[$i] = trim($option[$i]);

            // checks if field is empty
            if (empty($option[$i]) && $option[$i] != '0') {
                $msgErr = get_lang('FillLists');

                // clears options already recorded into the Answer object
                $objAnswer->cancel();

                break;
            } else {
                // adds the option into the object
                $objAnswer->createAnswer($option[$i], 0, '', 0, $i);
            }
        }

        $questionWeighting = 0;

        if (empty($msgErr)) {
            for ($j = 1; $j <= $nbrMatches; $i++, $j++) {
                $match[$i] = trim($match[$i]);
                $weighting[$i] = abs(intval($weighting[$i]));

                $questionWeighting+=$weighting[$i];

                // checks if field is empty
                if (empty($match[$i]) && $match[$i] != '0') {
                    $msgErr = get_lang('FillLists');

                    // clears matches already recorded into the Answer object
                    $objAnswer->cancel();

                    break;
                }
                // check if correct number
                else {
                    // adds the answer into the object
                    $objAnswer->createAnswer($match[$i], $sel[$i], '', $weighting[$i], $i);
                    //added
                    //if($_REQUEST['myid']==1)
                    $mainurl = "admin.php";
                    //else
                    //$mainurl="question_pool.php";
                    ?>
                    <script>
                        window.location.href='<?php echo $mainurl; ?>';
                    </script>
                    <?php
                }
            }
        }

        if (empty($msgErr)) {
            // checks if the question is used in several exercises
            if ($exerciseId && !$modifyIn && $objQuestion->selectNbrExercises() > 1) {
                $usedInSeveralExercises = 1;
            } else {
                // all answers have been recorded, so we save them into the data base
                $objAnswer->save();

                // sets the total weighting of the question
                $objQuestion->updateWeighting($questionWeighting);
                $objQuestion->save($exerciseId);

                $editQuestion = $questionId;

                unset($modifyAnswers);
            }
        }
    } elseif ($answerType == HOT_SPOT || $answerType == HOT_SPOT_ORDER) {
        $questionWeighting = $nbrGoodAnswers = 0;

        for ($i = 1; $i <= $nbrAnswers; $i++) {
            if ($debug > 0) {
                echo str_repeat('&nbsp;', 4) . '$answerType is HOT_SPOT' . "<br />\n";
            }

            $reponse[$i] = trim($reponse[$i]);
            $comment[$i] = trim($comment[$i]);
            $weighting[$i] = intval($weighting[$i]);

            // checks if field is empty
            if (empty($reponse[$i]) && $reponse[$i] != '0') {
                $msgErr = get_lang('HotspotGiveAnswers');

                // clears answers already recorded into the Answer object
                $objAnswer->cancel();

                break;
            }

            if ($weighting[$i] <= 0) {
                $msgErr = get_lang('HotspotWeightingError');

                // clears answers already recorded into the Answer object
                $objAnswer->cancel();

                break;
            }
            if ($hotspot_coordinates[$i] == '0;0|0|0' || empty($hotspot_coordinates[$i])) {
                $msgErr = get_lang('HotspotNotDrawn');

                // clears answers already recorded into the Answer object
                $objAnswer->cancel();

                break;
            }
        }  // end for()


        if (empty($msgErr)) {
            if ($exerciseId && !$modifyIn && $objQuestion->selectNbrExercises() > 1) {
                $usedInSeveralExercises = 1;
            } else {
                for ($i = 1; $i <= $nbrAnswers; $i++) {
                    if ($debug > 0) {
                        echo str_repeat('&nbsp;', 4) . '$answerType is HOT_SPOT' . "<br />\n";
                    }

                    $reponse[$i] = trim($reponse[$i]);
                    $comment[$i] = trim($comment[$i]);
                    $weighting[$i] = intval($weighting[$i]);
                    if ($weighting[$i]) {
                        $questionWeighting+=$weighting[$i];
                    }

                    // creates answer
                    $objAnswer->createAnswer($reponse[$i], '', $comment[$i], $weighting[$i], $i, $hotspot_coordinates[$i], $hotspot_type[$i]);
                }  // end for()
                // saves the answers into the data base
                $objAnswer->save();

                // sets the total weighting of the question
                $objQuestion->updateWeighting($questionWeighting);
                $objQuestion->save($exerciseId);

                $editQuestion = $questionId;

                unset($modifyAnswers);
            }
        }
    }
    if ($debug > 0) {
        echo '$modifyIn was set - end' . "<br />\n";
    }
}

if ($modifyAnswers) {
    if ($debug > 0) {
        echo str_repeat('&nbsp;', 0) . '$modifyAnswers is set' . "<br />\n";
    }

    // construction of the Answer object
    $objAnswer = new Answer($questionId);

    Session::write('objAnswer', $objAnswer);
    if ($answerType == UNIQUE_ANSWER || $answerType == MULTIPLE_ANSWER || $answerType == GLOBAL_MULTIPLE_ANSWER) {
        if ($debug > 0) {
            echo str_repeat('&nbsp;', 2) . '$answerType is UNIQUE_ANSWER or MULTIPLE_ANSWER' . "<br />\n";
        }
        if (!$nbrAnswers) {
            $nbrAnswers = $objAnswer->selectNbrAnswers();

            $reponse = array();
            $comment = array();
            $weighting = array();


            // initializing + Modification de la ligne suivante
            if ($answerType == MULTIPLE_ANSWER || $answerType == GLOBAL_MULTIPLE_ANSWER) {
                $correct = array();
            } else {
                $correct = 0;
            }

            for ($i = 1; $i <= $nbrAnswers; $i++) {
                $reponse[$i] = $objAnswer->selectAnswer($i);
                $comment[$i] = $objAnswer->selectComment($i);
                $weighting[$i] = $objAnswer->selectWeighting($i);
                if ($answerType == MULTIPLE_ANSWER || $answerType == GLOBAL_MULTIPLE_ANSWER) {
                    $correct[$i] = $objAnswer->isCorrect($i);
                } elseif ($objAnswer->isCorrect($i)) {
                    $correct = $i;
                }
            }
        }

        if ($lessAnswers) {
            $nbrAnswers--;
        }

        if ($moreAnswers) {
            $nbrAnswers++;
        }

        // minimum 2 answers
        if ($nbrAnswers < 2) {
            $nbrAnswers = 2;
        }
    } elseif ($answerType == FILL_IN_BLANKS) {
        if ($debug > 0) {
            echo str_repeat('&nbsp;', 2) . '$answerType is FILL_IN_BLANKS' . "<br />\n";
        }
        if (!$submitAnswers && !$buttonBack) {
            if (!$setWeighting) {
                $reponse = $objAnswer->selectAnswer(1);

                list($reponse, $weighting) = explode('::', $reponse);

                $weighting = explode(',', $weighting);

                $temp = array();

                // keys of the array go from 1 to N and not from 0 to N-1
                for ($i = 0; $i < sizeof($weighting); $i++) {
                    $temp[$i + 1] = $weighting[$i];
                }

                $weighting = $temp;
            } elseif (!$modifyIn) {
                $weighting = unserialize($weighting);
            }
        }
    } elseif ($answerType == FREE_ANSWER) {
        if ($debug > 0) {
            echo str_repeat('&nbsp;', 2) . '$answerType is FREE_ANSWER' . "<br />\n";
        }
        if (!$submitAnswers && !$buttonBack) {
            if ($debug > 0) {
                echo str_repeat('&nbsp;', 4) . '$submitAnswers && $buttonsBack are unset' . "<br />\n";
            }
            if (!$setWeighting) {
                if ($debug > 0) {
                    echo str_repeat('&nbsp;', 6) . '$setWeighting is unset' . "<br />\n";
                }

                //YW: not quite  sure about whether the comment has already been recovered,
                // but as we have passed into the submitAnswers loop, this should be in the
                // objAnswer object.
                $free_comment = $objAnswer->selectComment(1);
                $weighting = $objAnswer->selectWeighting(1); //added
            } elseif (!$modifyIn) {
                if ($debug > 0) {
                    echo str_repeat('&nbsp;', 6) . '$setWeighting is set and $modifyIn is unset' . "<br />\n";
                }
                $weighting = unserialize($weighting);
            }
        }
    } elseif ($answerType == MATCHING) {
        if ($debug > 0) {
            echo str_repeat('&nbsp;', 2) . '$answerType is MATCHING' . "<br />\n";
        }
        if (!$nbrOptions || !$nbrMatches) {
            $option = array();
            $match = array();
            $sel = array();

            $nbrOptions = $nbrMatches = 0;

            // fills arrays with data from de data base
            for ($i = 1; $i <= $objAnswer->selectNbrAnswers(); $i++) {
                // it is a match
                if ($objAnswer->isCorrect($i)) {
                    $match[$i] = $objAnswer->selectAnswer($i);
                    $sel[$i] = $objAnswer->isCorrect($i);
                    $weighting[$i] = $objAnswer->selectWeighting($i);
                    $nbrMatches++;
                }
                // it is an option
                else {
                    $option[$i] = $objAnswer->selectAnswer($i);
                    $nbrOptions++;
                }
            }
        }

        if ($lessOptions) {
            // keeps the correct sequence of array keys when removing an option from the list
            for ($i = $nbrOptions + 1, $j = 1; $nbrOptions > 2 && $j <= $nbrMatches; $i++, $j++) {
                $match[$i - 1] = $match[$i];
                $sel[$i - 1] = $sel[$i];
                $weighting[$i - 1] = $weighting[$i];
            }

            unset($match[$i - 1]);
            unset($sel[$i - 1]);

            $nbrOptions--;
        }

        if ($moreOptions) {
            // keeps the correct sequence of array keys when adding an option into the list
            for ($i = $nbrMatches + $nbrOptions; $i > $nbrOptions; $i--) {
                $match[$i + 1] = $match[$i];
                $sel[$i + 1] = $sel[$i];
                $weighting[$i + 1] = $weighting[$i];
            }

            unset($match[$i + 1]);
            unset($sel[$i + 1]);

            $nbrOptions++;
        }

        if ($lessMatches) {
            $nbrMatches--;
        }

        if ($moreMatches) {
            $nbrMatches++;
        }

        // minimum 2 options
        if ($nbrOptions < 2) {
            $nbrOptions = 2;
        }

        // minimum 2 matches
        if ($nbrMatches < 2) {
            $nbrMatches = 2;
        }
    } elseif ($answerType == HOT_SPOT || $answerType == HOT_SPOT_ORDER) {
        if ($debug > 0) {
            echo str_repeat('&nbsp;', 2) . '$answerType is HOT_SPOT' . "<br />\n";
        }

        if (!$nbrAnswers) {
            $nbrAnswers = $objAnswer->selectNbrAnswers();
            $reponse = array();
            $comment = array();
            $weighting = array();
            $hotspot_coordinates = array();
            $hotspot_type = array();


            for ($i = 1; $i <= $nbrAnswers; $i++) {
                $reponse[$i] = $objAnswer->selectAnswer($i);
                $comment[$i] = $objAnswer->selectComment($i);
                $weighting[$i] = $objAnswer->selectWeighting($i);
                $hotspot_coordinates[$i] = $objAnswer->selectHotspotCoordinates($i);
                $hotspot_type[$i] = $objAnswer->selectHotspotType($i);
            }
        }

        $_SESSION['tmp_answers'] = array();
        $_SESSION['tmp_answers']['answer'] = $reponse;
        $_SESSION['tmp_answers']['comment'] = $comment;
        $_SESSION['tmp_answers']['weighting'] = $weighting;
        $_SESSION['tmp_answers']['hotspot_coordinates'] = $hotspot_coordinates;
        $_SESSION['tmp_answers']['hotspot_type'] = $hotspot_type;

        if ($lessAnswers) {
            // At least 1 answer
            if ($nbrAnswers > 1) {

                $nbrAnswers--;

                // Remove the last answer
                $tmp = array_pop($_SESSION['tmp_answers']['answer']);
                $tmp = array_pop($_SESSION['tmp_answers']['comment']);
                $tmp = array_pop($_SESSION['tmp_answers']['weighting']);
                $tmp = array_pop($_SESSION['tmp_answers']['hotspot_coordinates']);
                $tmp = array_pop($_SESSION['tmp_answers']['hotspot_type']);
            } else {
                $msgErr = get_lang('MinHotspot');
            }
        }

        if ($moreAnswers) {
            if ($nbrAnswers < 12) {
                $nbrAnswers++;

                // Add a new answer
                $_SESSION['tmp_answers']['answer'][] = '';
                $_SESSION['tmp_answers']['comment'][] = '';
                $_SESSION['tmp_answers']['weighting'][] = '1';
                $_SESSION['tmp_answers']['hotspot_coordinates'][] = '0;0|0|0';
                $_SESSION['tmp_answers']['hotspot_type'][] = 'square';
            } else {
                $msgErr = get_lang('MaxHotspot');
            }
        }
    }

    if (!$usedInSeveralExercises) {
        if ($debug > 0) {
            echo str_repeat('&nbsp;', 2) . '$usedInSeveralExercises is untrue' . "<br />\n";
        }

        if ($answerType == UNIQUE_ANSWER || $answerType == MULTIPLE_ANSWER || $answerType == MULTIPLE_ANSWER_COMBINATION || $answerType == GLOBAL_MULTIPLE_ANSWER) {
            if ($debug > 0) {
                echo str_repeat('&nbsp;', 4) . '$answerType is UNIQUE_ANSWER or MULTIPLE_ANSWER' . "<br />\n";
            }
            ?>
            <h3>
            <?php echo $questionName; ?>
            </h3>
            <?php
            /* if ($exerciseId==0){
              ?>
              <form method="post" action="<?php echo api_get_self(); ?>?modifyAnswers=<?php  echo $modifyAnswers; ?>">
              <?php }
              else
              {
              ?>
              <form method="post" action="<?php echo api_get_self(); ?>?exerciseId=<?php  echo $exerciseId; ?>">
              <?php
              } */
            ?>
            <form method="post" action="<?php echo api_get_self(); ?>?modifyAnswers=<?php echo $modifyAnswers; ?>">


                <input type="hidden" name="formSent" value="1">
                <input type="hidden" name="nbrAnswers" value="<?php echo $nbrAnswers; ?>">
                <input type="hidden" name="myid" value="<?php echo intval($_REQUEST['myid']); ?>">

                <table width="650" border="0" cellpadding="5">

            <?php
            if ($okPicture) {
                ?>

                        <tr>
                            <td colspan="5" align="center"><img src="../document/download.php?doc_url=%2Fimages%2F<?php echo $pictureName; ?>" border="0"></td>
                        </tr>

                <?php
            }

            if (!empty($msgErr)) {
                ?>

                        <tr>
                            <td colspan="5">

                <?php
                Display::display_normal_message($msgErr); //main API
                ?>

                            </td>
                        </tr>

                <?php
            }
            ?>

                    <tr>
                        <td colspan="5"><?php echo get_lang('Answers'); ?> :</td>
                    </tr>
                    <tr bgcolor="#E6E6E6">
                        <td>N&#176;</td>
                        <td><?php echo get_lang('True'); ?></td>
                        <td><?php echo get_lang('Answer'); ?></td>
                        <td><?php echo get_lang('Comment'); ?></td>
                        <td><?php echo get_lang('QuestionWeighting'); ?></td>
                    </tr>

            <?php
            for ($i = 1; $i <= $nbrAnswers; $i++) {
                ?>

                        <tr>
                            <td valign="top"><?php echo $i; ?></td>

                <?php
                if ($answerType == UNIQUE_ANSWER) {
                    ?>

                                <td valign="top"><input class="checkbox" type="radio" value="<?php echo $i; ?>" name="correct" <?php if ($correct == $i) echo 'checked="checked"'; ?>></td>

                        <?php
                    }
                    else {
                        ?>

                                <td valign="top"><input class="checkbox" type="checkbox" value="1" name="correct[<?php echo $i; ?>]" <?php if ($correct[$i]) echo 'checked="checked"'; ?>></td>

                    <?php
                }
                ?>

                            <td align="left"><textarea wrap="virtual" rows="7" cols="25" name="reponse[<?php echo $i; ?>]"><?php echo api_htmlentities($reponse[$i], ENT_QUOTES, $charset); ?></textarea></td>
                            <td align="left"><textarea wrap="virtual" rows="7" cols="25" name="comment[<?php echo $i; ?>]"><?php echo api_htmlentities($comment[$i], ENT_QUOTES, $charset); ?></textarea></td>

                            <td valign="top"><input type="text" name="weighting[<?php echo $i; ?>]" size="5" value="<?php echo isset($weighting[$i]) ? $weighting[$i] : 0; ?>"></td>
                        </tr>

                <?php
            }
            ?>

                    <tr>
                        <td colspan="5">
                            <input type="submit" name="submitAnswers" value="<?php echo get_lang('Ok'); ?>">
                            &nbsp;&nbsp;<input type="submit" name="lessAnswers" value="<?php echo get_lang('LessAnswers'); ?>">
                            &nbsp;&nbsp;<input type="submit" name="moreAnswers" value="<?php echo get_lang('MoreAnswers'); ?>">
                            <!-- &nbsp;&nbsp;<input type="submit" name="cancelAnswers" value="<?php echo get_lang('Cancel'); ?>" onclick="javascript:if(!confirm('<?php echo addslashes(api_htmlentities(get_lang('ConfirmYourChoice'), ENT_QUOTES, $charset)); ?>')) return false;"> //-->
                        </td>
                    </tr>
                </table>
            </form>

            <?php
        }
        elseif ($answerType == FILL_IN_BLANKS) {
            if ($debug > 0) {
                echo str_repeat('&nbsp;', 4) . '$answerType is FILL_IN_BLANKS' . "<br />\n";
            }
            ?>

            <h3>
            <?php echo $questionName; ?>
            </h3>

            <form name="formulaire" method="post" action="<?php echo api_get_self(); ?>?modifyAnswers=<?php echo $modifyAnswers; ?>">
                <input type="hidden" name="formSent" value="1">
                <input type="hidden" name="setWeighting" value="<?php echo $setWeighting; ?>">
                <input type="hidden" name="myid" value="<?php echo intval($_REQUEST['myid']); ?>">

            <?php
            if (!$setWeighting) {
                ?>

                    <input type="hidden" name="weighting" value="<?php echo $submitAnswers ? api_htmlentities($weighting, ENT_QUOTES, $charset) : api_htmlentities(serialize($weighting), ENT_QUOTES, $charset); ?>">

                    <table border="0" cellpadding="5" width="500">

                <?php
                if ($okPicture) {
                    ?>

                            <tr>
                                <td align="center"><img src="../document/download.php?doc_url=%2Fimages%2F<?php echo $pictureName; ?>" border="0"></td>
                            </tr>

                            <?php
                        }

                        if (!empty($msgErr)) {
                            ?>

                            <tr>
                                <td colspan="2">

                                <?php
                                Display::display_normal_message($msgErr); //main API
                                ?>

                                </td>
                            </tr>

                                <?php
                            }
                            ?>

                        <tr>
                            <td><?php echo get_lang('TypeTextBelow') . ', ' . get_lang('And') . ' ' . get_lang('UseTagForBlank'); ?> :</td>
                        </tr>
                        <tr>
                            <td><textarea wrap="virtual" name="reponse" cols="65" rows="6"><?php if (!$submitAnswers && empty($reponse)) echo get_lang('DefaultTextInBlanks'); else echo api_htmlentities($reponse, ENT_QUOTES, $charset); ?></textarea></td>
                        </tr>
                        <tr>
                            <td colspan="5">
                              <!-- <input type="submit" name="cancelAnswers" value="<?php echo get_lang('Cancel'); ?>" onclick="javascript:if(!confirm('<?php echo addslashes(api_htmlentities(get_lang('ConfirmYourChoice'), ENT_QUOTES, $charset)); ?>')) return false;">
                              &nbsp;&nbsp; //--> <input type="submit" name="submitAnswers" value="<?php echo get_lang('Ok'); ?>">
                            </td>
                        </tr>
                    </table>

                        <?php
                    }
                    else {
                        ?>
                    <input type="hidden" name="blanks" value="<?php echo api_htmlentities(serialize($blanks), ENT_QUOTES, $charset); ?>">
                    <input type="hidden" name="reponse" value="<?php echo api_htmlentities($reponse, ENT_QUOTES, $charset); ?>">
                    <table border="0" cellpadding="5" width="500">
                <?php
                if (!empty($msgErr)) {
                    ?>

                            <tr>
                                <td colspan="2">

                    <?php
                    Display::display_normal_message($msgErr); //main API
                    ?>

                                </td>
                            </tr>

                    <?php
                }
                ?>

                        <tr>
                            <td colspan="2"><?php echo get_lang('WeightingForEachBlank'); ?> :</td>
                        </tr>
                        <tr>
                            <td colspan="2">&nbsp;</td>
                        </tr>

                    <?php
                    foreach ($blanks as $i => $blank) {
                        ?>

                            <tr>
                                <td width="50%"><?php echo $blank; ?> :</td>
                                <td width="50%"><input type="text" name="weighting[<?php echo $i; ?>]" size="5" value="<?php echo intval($weighting[$i]); ?>"></td>
                            </tr>

                            <?php
                        }
                        ?>

                        <tr>
                            <td colspan="2">&nbsp;</td>
                        </tr>
                        <tr>
                            <td colspan="2">
                                <input type="submit" name="buttonBack" value="&lt; <?php echo get_lang('Back'); ?>">
                                &nbsp;&nbsp;<input type="submit" name="submitAnswers" value="<?php echo '  ' . get_lang('Ok') . '  '; ?>">
                                <!-- &nbsp;&nbsp;<input type="submit" name="cancelAnswers" value="<?php echo get_lang('Cancel'); ?>" onclick="javascript:if(!confirm('<?php echo addslashes(api_htmlentities(get_lang('ConfirmYourChoice'), ENT_QUOTES, $charset)); ?>')) return false;"> //-->
                            </td>
                        </tr>
                    </table>

                <?php
            }
            ?>

            </form>

            <?php
        } elseif ($answerType == FREE_ANSWER) { //edited by Priya Saini
            if ($debug > 0) {
                echo str_repeat('&nbsp;', 4) . '$answerType is FREE_ANSWER' . "<br />\n";
            }
            ?>
            <h3>
            <?php echo $questionName; ?></h3><?php
            $sql = "select description from " . $TBL_QUESTIONS . " WHERE id = " . intval($questionId) . "";
            $res = Database::query($sql, _FILE_, _LINE_);
            ?>
            &nbsp; &nbsp; &nbsp;
            <?php
            echo $desc = Database::result($res, 0, 'description');
            ?>

            <form name="formulaire" method="post" action="<?php echo api_get_self(); ?>?modifyAnswers=<?php echo $modifyAnswers; ?>">
                <input type="hidden" name="formSent" value="1">
                <input type="hidden" name="setWeighting" value="1">
                <input type="hidden" name="myid" value="<?php echo intval($_REQUEST['myid']); ?>">
                <table border="0" cellpadding="5" width="500">
                <?php
                if ($okPicture) {
                    echo "Ok picture";
                    ?>

                        <tr>
                            <td align="center"><img src="../document/download.php?doc_url=%2Fimages%2F<?php echo $pictureName; ?>" border="0"></td>
                        </tr>
                        <?php
                    }

                    if (!empty($msgErr)) {
                        ?>
                        <tr>
                            <td colspan="2">
                <?php
                Display::display_normal_message($msgErr); //main API
                ?>

                            </td>
                        </tr>
                <?php
            }
            if (!$submitAnswers && empty($free_comment))
                echo '';
            else
                echo api_htmlentities($free_comment, ENT_QUOTES, $charset);
            ?>
                    <tr><td width="22%"><?php echo get_lang('QuestionWeighting'); ?></td>
                        <td width="78%"><input type="text" size="4" name="weighting" value="<?php if (!$submitAnswers && !isset($weighting)) echo '0'; else echo $weighting; ?>"></td>
                    </tr>
                    <tr>
                        <td colspan="5">
                            <input type="submit" name="submitAnswers" value="<?php echo get_lang('Ok'); ?>">
                        </td>
                    </tr>
                </table>
                    <?php
                }
                //end of FREE_ANSWER type*/
                elseif ($answerType == MATCHING) {
                    ?>

                <h3>
                    <?php echo $questionName; ?>
                </h3>

                <form method="post" action="<?php echo api_get_self(); ?>?modifyAnswers=<?php echo $modifyAnswers; ?>">
                    <input type="hidden" name="formSent" value="1">
                    <input type="hidden" name="nbrOptions" value="<?php echo $nbrOptions; ?>">
                    <input type="hidden" name="nbrMatches" value="<?php echo $nbrMatches; ?>">
                    <input type="hidden" name="myid" value="<?php echo intval($_REQUEST['myid']); ?>">

                    <table border="0" cellpadding="5">

            <?php
            if ($okPicture) {
                ?>

                            <tr>
                                <td colspan="4" align="center"><img src="../document/download.php?doc_url=%2Fimages%2F<?php echo $pictureName; ?>" border="0"></td>
                            </tr>

                    <?php
                }

                if (!empty($msgErr)) {
                    ?>

                            <tr>
                                <td colspan="4">

                <?php
                Display::display_normal_message($msgErr); //main API
                ?>

                                </td>
                            </tr>

                <?php
            }

            $listeOptions = array();

            // creates an array with the option letters
            for ($i = 1, $j = 'A'; $i <= $nbrOptions; $i++, $j++) {
                $listeOptions[$i] = $j;
            }
            ?>

                        <tr>
                            <td colspan="3"><?php echo get_lang('MakeCorrespond'); ?> :</td>
                            <td><?php echo get_lang('QuestionWeighting'); ?> :</td>
                        </tr>

                    <?php
                    for ($j = 1; $j <= $nbrMatches; $i++, $j++) {
                        ?>

                            <tr>
                                <td><?php echo $j; ?></td>
                                <td><input type="text" name="match[<?php echo $i; ?>]" size="58" value="<?php if (!$formSent && !isset($match[$i])) echo ${"langDefaultMakeCorrespond$j"}; else echo api_htmlentities($match[$i], ENT_QUOTES, $charset); ?>"></td>
                                <td align="center"><select name="sel[<?php echo $i; ?>]">

                                <?php
                                foreach ($listeOptions as $key => $val) {
                                    ?>

                                            <option value="<?php echo $key; ?>" <?php if ((!$submitAnswers && !isset($sel[$i]) && $j == 2 && $val == 'B') || $sel[$i] == $key) echo 'selected="selected"'; ?>><?php echo $val; ?></option>

                            <?php
                        } // end foreach()
                        ?>

                                    </select></td>
                                <td align="center"><input type="text" size="8" name="weighting[<?php echo $i; ?>]" value="<?php if (!$submitAnswers && !isset($weighting[$i])) echo '5'; else echo $weighting[$i]; ?>"></td>
                            </tr>

                <?php
            } // end for()
            ?>

                        <tr>
                            <td colspan="4">
                                <button type="submit" class="btn minus" name="lessMatches" value="<?php echo get_lang('LessElements'); ?>"><?php echo get_lang('LessElements'); ?></button>
                                &nbsp;&nbsp;<button class="btn plus" type="submit" name="moreMatches" value="<?php echo get_lang('MoreElements'); ?>"><?php echo get_lang('MoreElements'); ?></button>
                            </td>
                        </tr>
                        <tr>
                            <td colspan="4"><?php echo get_lang('DefineOptions'); ?> :</td>
                        </tr>

                    <?php
                    foreach ($listeOptions as $key => $val) {
                        ?>

                            <tr>
                                <td><?php echo $val; ?></td>
                                <td colspan="3"><input type="text" name="option[<?php echo $key; ?>]" size="80" value="<?php if (!$formSent && !isset($option[$key])) echo get_lang("DefaultMatchingOpt$val"); else echo api_htmlentities($option[$key], ENT_QUOTES, $charset); ?>"></td>
                            </tr>

                <?php
            } // end foreach()
            ?>

                        <tr>
                            <td colspan="4">
                                <button type="submit" class="minus" name="lessOptions" value="<?php echo get_lang('LessElements'); ?>"><?php echo get_lang('LessElements'); ?></button>
                                &nbsp;&nbsp;<button type="submit" class="plus" name="moreOptions" value="<?php echo get_lang('MoreElements'); ?>"><?php echo get_lang('MoreElements'); ?></button>
                            </td>
                        </tr>
                        <tr>
                            <td colspan="4">&nbsp;</td>
                        </tr>
                        <tr>
                            <td colspan="4">
                              <!-- <input type="submit" name="cancelAnswers" value="<?php echo get_lang('Cancel'); ?>" onclick="javascript:if(!confirm('<?php echo addslashes(api_htmlentities(get_lang('ConfirmYourChoice'), ENT_QUOTES, $charset)); ?>')) return false;">
                              &nbsp;&nbsp; //--> <input type="submit" name="submitAnswers" value="<?php echo get_lang('Ok'); ?>">
                            </td>
                        </tr>
                    </table>
                </form>

                                <?php
                            } elseif ($answerType == HOT_SPOT || $answerType == HOT_SPOT_ORDER) {
                                if ($debug > 0) {
                                    echo str_repeat('&nbsp;', 4) . '$answerType is HOT_SPOT' . "<br />\n";
                                }
                                $hotspot_colors = array("", // $i starts from 1 on next loop (ugly fix)
                                    "#4271B5",
                                    "#FE8E16",
                                    "#45C7F0",
                                    "#BCD631",
                                    "#D63173",
                                    "#D7D7D7",
                                    "#90AFDD",
                                    "#AF8640",
                                    "#4F9242",
                                    "#F4EB24",
                                    "#ED2024",
                                    "#3B3B3B",
                                    "#F7BDE2");
                                ?>

                <h3>
            <?php echo get_lang('Question') . ": " . $questionName; ?>
                </h3>
                        <?php
                        if (!empty($msgErr)) {
                            Display::display_normal_message($msgErr); //main API
                        }
                        ?>
                <table border="0" cellpadding="0" cellspacing="0" width="100%">
                    <tr>
                        <td colspan="2" style="border:1px solid #4271b5; border-bottom:none;"><?php echo get_lang('HotspotChoose'); ?></td>
                    </tr>
                    <tr>
                        <td width="550" valign="top">
                            <script type="text/javascript">
                                <!--
                                // Version check based upon the values entered above in "Globals"
                                var hasReqestedVersion = DetectFlashVer(requiredMajorVersion, requiredMinorVersion, requiredRevision);


                                // Check to see if the version meets the requirements for playback
                                if (hasReqestedVersion) {  // if we've detected an acceptable version
                                    var oeTags = '<object type="application/x-shockwave-flash" data="../plugin/hotspot/hotspot_admin.swf?modifyAnswers=<?php echo $modifyAnswers ?>" width="550" height="377">'
                                        + '<param name="movie" value="../plugin/hotspot/hotspot_admin.swf?modifyAnswers=<?php echo $modifyAnswers ?>" />'
                                        + '<param name="test" value="OOoowww fo shooww" />'
                                        + '</object>';
                                    document.write(oeTags);   // embed the Flash Content SWF when all tests are passed
                                } else {  // flash is too old or we can't detect the plugin
                                    var alternateContent = 'Error<br \/>'
                                        + 'This content requires the Macromedia Flash Player.<br \/>'
                                        + '<a href=http://www.macromedia.com/go/getflash/>Get Flash<\/a>';
                                    document.write(alternateContent);  // insert non-flash content
                                }
                                // -->
                            </script>
                        </td>
                        <td valign="top">
                            <form method="post" id="frm_exercise" action="<?php echo api_get_self(); ?>?modifyAnswers=<?php echo $modifyAnswers; ?>" name="frm_exercise">
                                <input type="hidden" name="formSent" value="1" />
                                <input type="hidden" name="nbrAnswers" value="<?php echo $nbrAnswers; ?>" />
                                <table border="0" cellpadding="3" cellspacing="0" style="border: 1px solid #4271b5; border-left:none; width: 100%; ">
                                    <!--
                                    <tr>
                                      <td colspan="5"><?php echo get_lang('AnswerHotspot'); ?> :</td>
                                    </tr>
                                    -->
                                    <tr style="background-color: #E6E6E6; height: 37px">
                                        <td style="width: 20px; border-bottom: 1px solid #4271b5">&nbsp;<?php /* echo get_lang('HotSpot'); */ ?></td>
                                        <td style="width: 100px; border-bottom: 1px solid #4271b5"><?php echo get_lang('Description'); ?>*</td>
                                        <td style="border-bottom: 1px solid #4271b5"><?php echo get_lang('Comment'); ?></td>
                                        <td style="width: 60px; border-bottom: 1px solid #4271b5"><?php echo get_lang('QuestionWeighting'); ?>*</td>
                                    </tr>

                        <?php
                        for ($i = 1; $i <= $nbrAnswers; $i++) {
                            ?>

                                        <tr>
                                            <td valign="top"><div style="height: 15px; width: 15px; background-color: <?php echo $hotspot_colors[$i]; ?>"> </div></td>
                                            <td valign="top" align="left"><input type="text" name="reponse[<?php echo $i; ?>]" value="<?php echo api_htmlentities($reponse[$i], ENT_QUOTES, $charset); ?>" size="12" /></td>
                                            <td align="left"><textarea wrap="virtual" rows="3" cols="10" name="comment[<?php echo $i; ?>]" style="width: 100%"><?php echo api_htmlentities($comment[$i], ENT_QUOTES, $charset); ?></textarea></td>
                                            <td valign="top"><input type="text" name="weighting[<?php echo $i; ?>]" size="1" value="<?php echo (isset($weighting[$i]) ? $weighting[$i] : 1); ?>" />
                                                <input type="hidden" name="hotspot_coordinates[<?php echo $i; ?>]" value="<?php echo (empty($hotspot_coordinates[$i]) ? '0;0|0|0' : $hotspot_coordinates[$i]); ?>" />
                                                <input type="hidden" name="hotspot_type[<?php echo $i; ?>]" value="<?php echo (empty($hotspot_type[$i]) ? 'square' : $hotspot_type[$i]); ?>" /></td>
                                        </tr>

                <?php
            }
            ?>

                                    <tr>
                                        <td colspan="5">
                                            <input type="submit" name="lessAnswers" value="<?php echo get_lang('LessHotspots'); ?>" />
                                            <input type="submit" name="moreAnswers" value="<?php echo get_lang('MoreHotspots'); ?>" />
                                            <hr noshade="noshade" size="1" style="color: #4271b5" />
                                            <input type="submit" name="submitAnswers" value="<?php echo get_lang('Ok'); ?>" />
                                            <!--<input type="submit" name="cancelAnswers" value="<?php echo get_lang('Cancel'); ?>" onclick="javascript:if(!confirm('<?php echo addslashes(api_htmlentities(get_lang('ConfirmYourChoice'), ENT_QUOTES, $charset)); ?>')) return false;" />-->
                                        </td>
                                    </tr>
                                </table>
                            </form>
                            <table cellpadding="0" cellspacing="0">
                                <tr>
                                    <td style="text-align:center; vertical-align:top; width:20px;">*</td>
                                    <td style="width:auto;"><?php echo get_lang('HotspotRequired'); ?></td>
                                </tr>
                            </table>
                        </td>
                    </tr>
                </table>
                    <?php
                }
            }
            if ($debug > 0) {
                echo str_repeat('&nbsp;', 0) . '$modifyAnswers was set - end' . "<br />\n";
            }
        }