chamilo-lms/main/exercice/exercise_result.php

<?php
/* For licensing terms, see /chamilo_license.txt */
/**
*	Exercise result
*	This script gets informations from the script "exercise_submit.php",
*	through the session, and calculates the score of the student for
*	that exercise.
*	Then it shows the results on the screen.
*	@package dokeos.exercise
*	@author Olivier Brouckaert, main author
*	@author Roan Embrechts, some refactoring
* 	@author Julio Montoya Armas switchable fill in blank option added
* 	@version $Id: exercise_result.php 22201 2009-07-17 19:57:03Z cfasanando $
*
*	@todo	split more code up in functions, move functions to library?
*/
/*
==============================================================================
		INIT SECTION
==============================================================================
*/
require_once('exercise.class.php');
require_once('question.class.php');
require_once('answer.class.php');
if ($_GET['origin']=='learnpath') {
	require_once ('../newscorm/learnpath.class.php');
	require_once ('../newscorm/learnpathItem.class.php');
	require_once ('../newscorm/scorm.class.php');
	require_once ('../newscorm/scormItem.class.php');
	require_once ('../newscorm/aicc.class.php');
	require_once ('../newscorm/aiccItem.class.php');
}
global $_cid;
// name of the language file that needs to be included
$language_file='exercice';

require('../inc/global.inc.php');
$this_section=SECTION_COURSES;

/* ------------	ACCESS RIGHTS ------------ */
// notice for unauthorized people.
api_protect_course_script(true);

require_once(api_get_path(LIBRARY_PATH).'mail.lib.inc.php');
require_once(api_get_path(LIBRARY_PATH).'course.lib.php');

// Database table definitions
$TBL_EXERCICE_QUESTION 	= Database::get_course_table(TABLE_QUIZ_TEST_QUESTION);
$TBL_EXERCICES         	= Database::get_course_table(TABLE_QUIZ_TEST);
$TBL_QUESTIONS         	= Database::get_course_table(TABLE_QUIZ_QUESTION);
$TBL_REPONSES          	= Database::get_course_table(TABLE_QUIZ_ANSWER);
$TBL_TRACK_EXERCICES	= Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_EXERCICES);
$TBL_TRACK_ATTEMPT		= Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_ATTEMPT);
$main_user_table 		= Database :: get_main_table(TABLE_MAIN_USER);
$main_course_user_table = Database :: get_main_table(TABLE_MAIN_COURSE_USER);
$table_ans 				= Database :: get_course_table(TABLE_QUIZ_ANSWER);

//temp values to move to admin settings
$dsp_percent = false; //false to display total score as absolute values
//debug param. 0: no display - 1: debug display
$debug=0;
if($debug>0){echo str_repeat('&nbsp;',0).'Entered exercise_result.php'."<br />\n";var_dump($_POST);}
// general parameters passed via POST/GET
if ( empty ( $origin ) ) {
     $origin = Security::remove_XSS($_REQUEST['origin']);
}
if ( empty ( $learnpath_id ) ) {
     $learnpath_id       = Security::remove_XSS($_REQUEST['learnpath_id']);
}
if ( empty ( $learnpath_item_id ) ) {
     $learnpath_item_id  = Security::remove_XSS($_REQUEST['learnpath_item_id']);
}
if ( empty ( $formSent ) ) {
    $formSent       = $_REQUEST['formSent'];
}
if ( empty ( $exerciseResult ) ) {
     $exerciseResult = $_SESSION['exerciseResult'];
}
if ( empty ( $exerciseResultCoordinates ) ) {
     $exerciseResultCoordinates = $_SESSION['exerciseResultCoordinates'];
}
if ( empty ( $questionId ) ) {
    $questionId = $_REQUEST['questionId'];
}
if ( empty ( $choice ) ) {
    $choice = $_REQUEST['choice'];
}
if ( empty ( $questionNum ) ) {
   $questionNum    = $_REQUEST['questionNum'];
}
if ( empty ( $nbrQuestions ) ) {
    $nbrQuestions   = $_REQUEST['nbrQuestions'];
}
if ( empty ( $questionList ) ) {
    $questionList = $_SESSION['questionList'];
}
if ( empty ( $objExercise ) ) {
    $objExercise = $_SESSION['objExercise'];
}
if ( empty ( $exerciseType ) ) {
    $exerciseType = $_REQUEST['exerciseType'];
}

$_configuration['live_exercise_tracking'] = false;
if($_configuration['live_exercise_tracking']) define('ENABLED_LIVE_EXERCISE_TRACKING',1);

if($_configuration['live_exercise_tracking'] == true && $exerciseType == 1){
	$_configuration['live_exercise_tracking'] = false;
}
$arrques = array();
$arrans = array();

// set admin name as person who sends the results e-mail (lacks policy about whom should really send the results)
$main_user_table = Database :: get_main_table(TABLE_MAIN_USER);
$main_admin_table = Database :: get_main_table(TABLE_MAIN_ADMIN);

$query = "SELECT user_id FROM $main_admin_table LIMIT 1"; //get all admins from admin table
$admin_id = Database::result(Database::query($query),0,"user_id");
$uinfo = api_get_user_info($admin_id);
$from = $uinfo['mail'];
$from_name = api_get_person_name($uinfo['firstname'], $uinfo['lastname'], null, PERSON_NAME_EMAIL_ADDRESS);
$str = $_SERVER['REQUEST_URI'];
$url = api_get_path(WEB_CODE_PATH).'exercice/exercice.php?'.api_get_cidreq().'&show=result';

 // if the above variables are empty or incorrect, we don't have any result to show, so stop the script
if(!is_array($exerciseResult) || !is_array($questionList) || !is_object($objExercise)) {
	header('Location: exercice.php');
	exit();
}

$sql_fb_type='SELECT feedback_type FROM '.$TBL_EXERCICES.' WHERE id ="'.Database::escape_string($objExercise->selectId()).'"';
$res_fb_type=Database::query($sql_fb_type,__FILE__,__LINE__);
$row_fb_type=Database::fetch_row($res_fb_type);
$feedback_type = $row_fb_type[0];


// define basic exercise info to print on screen
$exerciseTitle=$objExercise->selectTitle();
$exerciseDescription=$objExercise->selectDescription();

$gradebook = '';
if (isset($_SESSION['gradebook'])) {
	$gradebook=	$_SESSION['gradebook'];
}

if (!empty($gradebook) && $gradebook=='view') {
	$interbreadcrumb[]= array (
			'url' => '../gradebook/'.$_SESSION['gradebook_dest'],
			'name' => get_lang('Gradebook')
		);
}

$nameTools=get_lang('Exercice');

$interbreadcrumb[]=array("url" => "exercice.php?gradebook=$gradebook","name" => get_lang('Exercices'));
$htmlHeadXtra[] = "<script type=\"text/javascript\" src=\"../plugin/hotspot/JavaScriptFlashGateway.js\"></script>
					<script src=\"../plugin/hotspot/hotspot.js\" type=\"text/javascript\"></script>
					<script language=\"JavaScript\" type=\"text/javascript\">
					<!--
					// -----------------------------------------------------------------------------
					// Globals
					// Major version of Flash required
					var requiredMajorVersion = 7;
					// Minor version of Flash required
					var requiredMinorVersion = 0;
					// Minor version of Flash required
					var requiredRevision = 0;
					// the version of javascript supported
					var jsVersion = 1.0;
					// -----------------------------------------------------------------------------
					// -->
					</script>
					<script language=\"VBScript\" type=\"text/vbscript\">
					<!-- // Visual basic helper required to detect Flash Player ActiveX control version information
					Function VBGetSwfVer(i)
					  on error resume next
					  Dim swControl, swVersion
					  swVersion = 0

					  set swControl = CreateObject(\"ShockwaveFlash.ShockwaveFlash.\" + CStr(i))
					  if (IsObject(swControl)) then
					    swVersion = swControl.GetVariable(\"\$version\")
					  end if
					  VBGetSwfVer = swVersion
					End Function
					// -->
					</script>

					<script language=\"JavaScript1.1\" type=\"text/javascript\">
					<!-- // Detect Client Browser type
					var isIE  = (navigator.appVersion.indexOf(\"MSIE\") != -1) ? true : false;
					var isWin = (navigator.appVersion.toLowerCase().indexOf(\"win\") != -1) ? true : false;
					var isOpera = (navigator.userAgent.indexOf(\"Opera\") != -1) ? true : false;
					jsVersion = 1.1;
					// JavaScript helper required to detect Flash Player PlugIn version information
					function JSGetSwfVer(i){
						// NS/Opera version >= 3 check for Flash plugin in plugin array
						if (navigator.plugins != null && navigator.plugins.length > 0) {
							if (navigator.plugins[\"Shockwave Flash 2.0\"] || navigator.plugins[\"Shockwave Flash\"]) {
								var swVer2 = navigator.plugins[\"Shockwave Flash 2.0\"] ? \" 2.0\" : \"\";
					      		var flashDescription = navigator.plugins[\"Shockwave Flash\" + swVer2].description;
								descArray = flashDescription.split(\" \");
								tempArrayMajor = descArray[2].split(\".\");
								versionMajor = tempArrayMajor[0];
								versionMinor = tempArrayMajor[1];
								if ( descArray[3] != \"\" ) {
									tempArrayMinor = descArray[3].split(\"r\");
								} else {
									tempArrayMinor = descArray[4].split(\"r\");
								}
					      		versionRevision = tempArrayMinor[1] > 0 ? tempArrayMinor[1] : 0;
					            flashVer = versionMajor + \".\" + versionMinor + \".\" + versionRevision;
					      	} else {
								flashVer = -1;
							}
						}
						// MSN/WebTV 2.6 supports Flash 4
						else if (navigator.userAgent.toLowerCase().indexOf(\"webtv/2.6\") != -1) flashVer = 4;
						// WebTV 2.5 supports Flash 3
						else if (navigator.userAgent.toLowerCase().indexOf(\"webtv/2.5\") != -1) flashVer = 3;
						// older WebTV supports Flash 2
						else if (navigator.userAgent.toLowerCase().indexOf(\"webtv\") != -1) flashVer = 2;
						// Can't detect in all other cases
						else {

							flashVer = -1;
						}
						return flashVer;
					}
					// When called with reqMajorVer, reqMinorVer, reqRevision returns true if that version or greater is available
					function DetectFlashVer(reqMajorVer, reqMinorVer, reqRevision)
					{
					 	reqVer = parseFloat(reqMajorVer + \".\" + reqRevision);
					   	// loop backwards through the versions until we find the newest version
						for (i=25;i>0;i--) {
							if (isIE && isWin && !isOpera) {
								versionStr = VBGetSwfVer(i);
							} else {
								versionStr = JSGetSwfVer(i);
							}
							if (versionStr == -1 ) {
								return false;
							} else if (versionStr != 0) {
								if(isIE && isWin && !isOpera) {
									tempArray         = versionStr.split(\" \");
									tempString        = tempArray[1];
									versionArray      = tempString .split(\",\");
								} else {
									versionArray      = versionStr.split(\".\");
								}
								versionMajor      = versionArray[0];
								versionMinor      = versionArray[1];
								versionRevision   = versionArray[2];

								versionString     = versionMajor + \".\" + versionRevision;   // 7.0r24 == 7.24
								versionNum        = parseFloat(versionString);
					        	// is the major.revision >= requested major.revision AND the minor version >= requested minor
								if ( (versionMajor > reqMajorVer) && (versionNum >= reqVer) ) {
									return true;
								} else {
									return ((versionNum >= reqVer && versionMinor >= reqMinorVer) ? true : false );
								}
							}
						}
					}
					// -->
					</script>";

if ($origin != 'learnpath') {
	//so we are not in learnpath tool
	Display::display_header($nameTools,"Exercise");
} else {

	header('Content-Type: text/html; charset='.api_get_system_encoding());

	$document_language = api_get_language_isocode();

	/*
	 * HTML HEADER
	 */

?>
<!DOCTYPE html
     PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
     "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="<?php echo $document_language; ?>" lang="<?php echo $document_language; ?>">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=<?php echo $charset; ?>" />
<link rel="stylesheet" type="text/css" href="<?php echo api_get_path(WEB_CODE_PATH).'css/'.api_get_setting('stylesheets').'/default.css'; ?>" />
</head>

<body dir="<?php echo api_get_text_direction(); ?>">
<?php
}


if ($objExercise->results_disabled) {
	ob_start();
}

/*
FUNCTIONS
*/


function display_unique_or_multiple_answer($answerType, $studentChoice, $answer, $answerComment, $answerCorrect)
{
	global $feedback_type;
	?>
	<tr>
	<td width="5%" align="center">
		<img src="../img/<?php echo ($answerType == UNIQUE_ANSWER)?'radio':'checkbox'; echo $studentChoice?'_on':'_off'; ?>.gif"
		border="0" alt="" />
	</td>
	<td width="5%" align="center">
		<img src="../img/<?php echo ($answerType == UNIQUE_ANSWER)?'radio':'checkbox'; echo $answerCorrect?'_on':'_off'; ?>.gif"
		border="0" alt=" " />
	</td>
	<td width="45%" style="border-bottom: 1px solid #4171B5;">
		<?php
		$answer=api_parse_tex($answer);
		echo $answer;
		?>
	</td>
	<?php if ($feedback_type != EXERCISE_FEEDBACK_TYPE_EXAM) { ?>
	<td width="45%" style="border-bottom: 1px solid #4171B5;">
		<?php
		$answerComment=api_parse_tex($answerComment);
		if($studentChoice)
		{
			if(!$answerCorrect)
			{
				echo '<span style="font-weight: bold; color: #FF0000;">'.nl2br(make_clickable($answerComment)).'</span>';
			}
			else{
				echo '<span style="font-weight: bold; color: #008000;">'.nl2br(make_clickable($answerComment)).'</span>';
			}
		}
		else
		{
			echo '&nbsp;';
		}
		?>
	</td>
	<?php } else { ?>
		<td>&nbsp;</td>
	<?php } ?>
	</tr>
	<?php
}

function display_fill_in_blanks_answer($answer)
{
	?>
		<tr>
		<td>
			<?php echo Security::remove_XSS($answer,COURSEMANAGERLOWSECURITY); ?>
		</td>
		</tr>
	<?php
}

function display_free_answer($answer)
{
	global $feedback_type;
	?>
		<tr>
		<td width="55%">
			<?php echo nl2br(Security::remove_XSS($answer,COURSEMANAGERLOWSECURITY)); ?>
		</td>
	<?php if ($feedback_type != EXERCISE_FEEDBACK_TYPE_EXAM) { ?>
   <td width="45%">
    <?php echo get_lang('notCorrectedYet');?>

   </td>
   <?php } else { ?>
		<td>&nbsp;</td>
	<?php } ?>
		</tr>
	<?php
}

function display_hotspot_answer($answerId, $answer, $studentChoice, $answerComment)
{
	global $feedback_type;
	$hotspot_colors = array("", // $i starts from 1 on next loop (ugly fix)
            						"#4271B5",
									"#FE8E16",
									"#3B3B3B",
									"#BCD631",
									"#D63173",
									"#D7D7D7",
									"#90AFDD",
									"#AF8640",
									"#4F9242",
									"#F4EB24",
									"#ED2024",
									"#45C7F0",
									"#F7BDE2");
	?>
		<tr>
				<td valign="top">
				<div style="height:11px; width:11px; background-color:<?php echo $hotspot_colors[$answerId]; ?>; display:inline; float:left; margin-top:3px;"></div>
				<div style="float:left; padding-left:5px;">
				<?php echo $answerId; ?>
				</div>
					<div style="float:left; padding-left:5px;">

						<div style="display:inline; float:left; width:80px;"><?php echo $answer ?></div>

					</div>
				</td>
				<td valign="top">
					<?php $my_choice = ($studentChoice)?get_lang('Correct'):get_lang('Fault'); echo $my_choice; ?>
				</td>
				<?php if ($feedback_type != EXERCISE_FEEDBACK_TYPE_EXAM) { ?>
				<td valign="top">
					<?php
					if ($studentChoice) {
						echo '<span style="font-weight: bold; color: #008000;">';
					} else {
						echo '<span style="font-weight: bold; color: #FF0000;">';
					}
					echo $answerComment;
					echo '</span>';
					?>
				</td>
				<?php } else { ?>
					<td>&nbsp;</td>
				<?php } ?>
		</tr>
	<?php
}

/*
DISPLAY AND MAIN PROCESS
*/

// I'm in a preview mode as course admin. Display the action menu.
if (api_is_course_admin() && $origin != 'learnpath') {
	echo '<div class="actions">';
	echo Display::return_icon('quiz.gif', get_lang('GoBackToEx')).'<a href="admin.php?'.api_get_cidreq().'&exerciseId='.$objExercise->id.'">'.get_lang('GoBackToEx').'</a>';
	echo Display::return_icon('edit.gif', get_lang('ModifyExercise')).'<a href="exercise_admin.php?'.api_get_cidreq().'&modifyExercise=yes&exerciseId='.$objExercise->id.'">'.get_lang('ModifyExercise').'</a>';
	echo '</div>';
}

$exerciseTitle=api_parse_tex($exerciseTitle);

//show exercise title
?>
	<?php if($origin != 'learnpath') {?>
		<h3><?php echo $exerciseTitle ?>: <?php echo get_lang("Result"); ?></h3>
		<?php echo $exerciseDescription; ?>
	<?php } ?>

	<form method="get" action="exercice.php?<?php echo api_get_cidreq() ?>">
	<input type="hidden" name="origin" value="<?php echo $origin; ?>" />
    <input type="hidden" name="learnpath_id" value="<?php echo $learnpath_id; ?>" />
    <input type="hidden" name="learnpath_item_id" value="<?php echo $learnpath_item_id; ?>" />

<?php

$i=$totalScore=$totalWeighting=0;
if($debug>0){echo "ExerciseResult: "; var_dump($exerciseResult); echo "QuestionList: ";var_dump($questionList);}

if ($_configuration['tracking_enabled']) {
	// Create an empty exercise
	if (api_is_allowed_to_session_edit() )
		$exeId= create_event_exercice($objExercise->selectId());
}
$counter=0;

// Loop over all question to show results for each of them, one by one
foreach ($questionList as $questionId) {
	$counter++;
	// gets the student choice for this question
	$choice=$exerciseResult[$questionId];
	// creates a temporary Question object
	$objQuestionTmp = Question :: read($questionId);
	// initialize question information
	$questionName=$objQuestionTmp->selectTitle();
	$questionDescription=$objQuestionTmp->selectDescription();
	$questionWeighting=$objQuestionTmp->selectWeighting();
	$answerType=$objQuestionTmp->selectType();
	$quesId =$objQuestionTmp->selectId(); //added by priya saini

	// destruction of the Question object
	unset($objQuestionTmp);

	// decide how many columns we want to use to show the results of each type
	if($answerType == UNIQUE_ANSWER || $answerType == MULTIPLE_ANSWER || $answerType == MULTIPLE_ANSWER_COMBINATION) {
		$colspan=4;
	} elseif($answerType == MATCHING || $answerType == FREE_ANSWER) {
		$colspan=2;
	} elseif($answerType == HOT_SPOT || $answerType == HOT_SPOT_ORDER) {
		$colspan=4;
		$rowspan=$nbrAnswers+1;
	} else {
		$colspan=1;
	}
	// show titles
	if ($origin != 'learnpath') {?>
		<table width="100%" border="0" cellpadding="3" cellspacing="2">
		<tr bgcolor="#E6E6E6">
		<td colspan="<?php echo $colspan; ?>">
			<?php echo get_lang("Question").' '.($counter).' : '.$questionName; ?>
		</td>
		</tr>
		<tr>
		<td colspan="<?php echo $colspan; ?>">
			<i><?php echo $questionDescription; ?></i>
		</td>
		</tr>
		<?php
		if ($answerType == UNIQUE_ANSWER || $answerType == MULTIPLE_ANSWER || $answerType == MULTIPLE_ANSWER_COMBINATION ) {
			?>
				<tr>
				<td width="5%" valign="top" align="center" nowrap="nowrap">
					<i><?php echo get_lang("Choice"); ?></i>
				</td>
				<td width="5%"  align="center" nowrap="nowrap">
					<i><?php echo get_lang("ExpectedChoice"); ?></i>
				</td>
				<td width="45%" valign="top">
					<i><?php echo get_lang("Answer"); ?></i>
				</td>
				<?php if ($feedback_type != EXERCISE_FEEDBACK_TYPE_EXAM) { ?>
				<td width="45%" valign="top">
					<i><?php echo get_lang("Comment"); ?></i>
				</td>
				<?php } else { ?>
					<td>&nbsp;</td>
				<?php } ?>
				</tr>
			<?php
		} elseif ($answerType == FILL_IN_BLANKS) {
			?>
				<tr>
				<td>
					<i><?php echo get_lang("Answer"); ?></i>
				</td>
				</tr>
			<?php
		} elseif ($answerType == FREE_ANSWER) {
			?>
				<tr>
				<td width="55%">
					<i><?php echo get_lang("Answer"); ?></i>
				</td>
				<?php if ($feedback_type != EXERCISE_FEEDBACK_TYPE_EXAM) { ?>
				<td width="45%" valign="top">
					<i><?php echo get_lang("Comment"); ?></i>
				</td>
				<?php } else { ?>
					<td>&nbsp;</td>
				<?php } ?>
				</tr>
			<?php
		} elseif ($answerType == HOT_SPOT) {
			?>
				<tr>
					<td valign="top" colspan="2">
						<table width="552" border="1" bordercolor="#A4A4A4" style="border-collapse: collapse;">
							<tr>
								<td width="152" valign="top">
									<i><?php echo get_lang("CorrectAnswer"); ?></i><br /><br />
								</td>

								<td width="100" valign="top">
									<i><?php echo get_lang('HotspotHit'); ?></i><br /><br />
								</td>
								<?php if ($feedback_type != EXERCISE_FEEDBACK_TYPE_EXAM) { ?>
								<td width="300" valign="top">
									<i><?php echo get_lang("Comment"); ?></i><br /><br />
								</td>
								<?php } else { ?>
									<td>&nbsp;</td>
								<?php } ?>
							</tr>
			<?php
		} else { //matching type
			?>
				<tr>
				<td width="50%">
					<i><?php echo get_lang("ElementList"); ?></i>
				</td>
				<td width="50%">
					<i><?php echo get_lang("CorrespondsTo"); ?></i>
				</td>
				</tr>
			<?php
		}
	}

	// construction of the Answer object
	$user_answer = '';
	$objAnswerTmp=new Answer($questionId);
	$nbrAnswers=$objAnswerTmp->selectNbrAnswers();
	$questionScore=0;
	if ($answerType == FREE_ANSWER) {
		$nbrAnswers = 1;
	}

	// get answer list for matching
	$sql_answer = 'SELECT id, answer FROM '.$table_ans.' WHERE question_id="'.Database::escape_string($questionId).'" ';
	$res_answer = Database::query($sql_answer, __FILE__, __LINE__);
	$answer_matching =array();
	while ($real_answer = Database::fetch_array($res_answer)) {
		$answer_matching[$real_answer['id']]= $real_answer['answer'];
	}
	$real_answers = array();

	// We're inside *one* question. Go through each possible answer for this question
	for ($answerId=1;$answerId <= $nbrAnswers;$answerId++) {

		//select answer of *position*=$answerId
		$answer=$objAnswerTmp->selectAnswer($answerId);
		$answerComment=$objAnswerTmp->selectComment($answerId);
		$answerCorrect=$objAnswerTmp->isCorrect($answerId);
		$answerWeighting=$objAnswerTmp->selectWeighting($answerId);
		$numAnswer=$objAnswerTmp->selectAutoId($answerId);

		switch ($answerType) {
			// for unique answer
			case UNIQUE_ANSWER :
					// if the student choice is equal to the answer ID
					// then give him the corresponding score
					// (maybe a negative score, positive score or 0)
					// Positive score should only be given when we are going over the right answer
					$studentChoice=($choice == $numAnswer)?1:0;
					if($studentChoice) {
					  	$questionScore+=$answerWeighting;
						$totalScore+=$answerWeighting;
					}
					break;
			// for multiple answers
			case MULTIPLE_ANSWER :
				$studentChoice=$choice[$numAnswer];
				if($studentChoice) {
					$questionScore+=$answerWeighting;
					$totalScore+=$answerWeighting;
				}
				break;
			case MULTIPLE_ANSWER_COMBINATION :
				$studentChoice=$choice[$numAnswer];

				if ($answerCorrect == 1) {
					if ($studentChoice) {
						$real_answers[$answerId] = true;
					} else {
						$real_answers[$answerId] = false;
					}
				} else {
					if ($studentChoice) {
						$real_answers[$answerId] = false;
					} else {
						$real_answers[$answerId] = true;
					}
				}
				break;
			// for fill in the blanks
			case FILL_IN_BLANKS :
		    		// the question is encoded like this
				    // [A] B [C] D [E] F::10,10,10@1
				    // number 1 before the "@" means that is a switchable fill in blank question
				    // [A] B [C] D [E] F::10,10,10@ or  [A] B [C] D [E] F::10,10,10
				    // means that is a normal fill blank question

					// first we explode the "::"
					$pre_array = explode('::', $answer);

					// is switchable fill blank or not
                    $last = count($pre_array)-1;
					$is_set_switchable = explode('@', $pre_array[$last]);

					$switchable_answer_set=false;
					if (isset($is_set_switchable[1]) && $is_set_switchable[1]==1)
					{
						$switchable_answer_set=true;
					}

                    $answer = '';
                    for ($k=0; $k<$last; $k++)
                    {
					  $answer .= $pre_array[$k];
                    }

					// splits weightings that are joined with a comma
					$answerWeighting = explode(',',$is_set_switchable[0]);

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

					// TeX parsing
					// 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);
					}

					$answer='';
					$j=0;

                    //initialise answer tags
					$user_tags=array();
					$correct_tags=array();
					$real_text=array();
					// the loop will stop at the end of the text
					while(1)
					{
						// quits the loop if there are no more blanks (detect '[')
						if(($pos = api_strpos($temp,'[')) === false)
						{
							// adds the end of the textsolution
							$answer=$temp;
							// TeX parsing - replacement of texcode tags
							$texstring = api_parse_tex($texstring);
							$answer=str_replace("{texcode}",$texstring,$answer);
                            $real_text[] = $answer;
							break; //no more "blanks", quit the loop
						}
						// adds the piece of text that is before the blank
                        //and ends with '[' into a general storage array
                        $real_text[]=api_substr($temp,0,$pos+1);
						$answer.=api_substr($temp,0,$pos+1);
						//take the string remaining (after the last "[" we found)
						$temp=api_substr($temp,$pos+1);
						// quit the loop if there are no more blanks, and update $pos to the position of next ']'
						if(($pos = api_strpos($temp,']')) === false)
						{
							// adds the end of the text
							$answer.=$temp;
							break;
						}
						$choice[$j]=trim($choice[$j]);
						$user_tags[]=api_strtolower($choice[$j]);
						//put the contents of the [] answer tag into correct_tags[]
                        $correct_tags[]=api_strtolower(api_substr($temp,0,$pos));
						$j++;
						$temp=api_substr($temp,$pos+1);
                        //$answer .= ']';
					}

					$answer='';
					$real_correct_tags = $correct_tags;
					$chosen_list=array();

					for($i=0;$i<count($real_correct_tags);$i++) {
						if ($i==0) {
							$answer.=$real_text[0];
						}

						if (!$switchable_answer_set)
						{
							if ($correct_tags[$i]==$user_tags[$i])
							{
								// gives the related weighting to the student
								$questionScore+=$answerWeighting[$i];
								// increments total score
								$totalScore+=$answerWeighting[$i];
								// adds the word in green at the end of the string
								$answer.=$correct_tags[$i];
							}
							// else if the word entered by the student IS NOT the same as the one defined by the professor
							elseif(!empty($user_tags[$i]))
							{
								// adds the word in red at the end of the string, and strikes it
								$answer.='<font color="red"><s>'.$user_tags[$i].'</s></font>';
							}
							else
							{
								// adds a tabulation if no word has been typed by the student
								$answer.='&nbsp;&nbsp;&nbsp;';
							}
						} else {
							// switchable fill in the blanks
							if (in_array($user_tags[$i],$correct_tags)) {
								$chosen_list[]=$user_tags[$i];
								$correct_tags=array_diff($correct_tags,$chosen_list);

								// gives the related weighting to the student
								$questionScore+=$answerWeighting[$i];
								// increments total score
								$totalScore+=$answerWeighting[$i];
								// adds the word in green at the end of the string
								$answer.=$user_tags[$i];
							}													// else if the word entered by the student IS NOT the same as the one defined by the professor
							elseif(!empty($user_tags[$i]))
							{
								// adds the word in red at the end of the string, and strikes it
								$answer.='<font color="red"><s>'.$user_tags[$i].'</s></font>';
							}
							else
							{
								// adds a tabulation if no word has been typed by the student
								$answer.='&nbsp;&nbsp;&nbsp;';
							}
						}
						// adds the correct word, followed by ] to close the blank
						$answer.=' / <font color="green"><b>'.$real_correct_tags[$i].'</b></font>]';
						if ( isset( $real_text[$i+1] ) ) {
                            $answer.=$real_text[$i+1];
                        }
					}
					break;
			// for free answer
			case FREE_ANSWER :
					$studentChoice=$choice;

					if($studentChoice)
					{
						//Score is at -1 because the question has'nt been corected
					  	$questionScore=-1;
						$totalScore+=0;
					}
					break;
			// for matching
			case MATCHING :
					if ($answerCorrect) {
						if ($answerCorrect == $choice[$numAnswer]) {
							$questionScore+=$answerWeighting;
							$totalScore+=$answerWeighting;
							$user_answer = '<span>'.$answer_matching[$choice[$numAnswer]].'</span>';
						} else {
						   	$user_answer = '<span style="color: #FF0000; text-decoration: line-through;">'.$answer_matching[$choice[$numAnswer]].'</span>';
						}
						$matching[$numAnswer] =  $choice[$numAnswer];
					}
					break;
			// for hotspot with no order
			case HOT_SPOT :
					$studentChoice=$choice[$answerId];
					if ($studentChoice) { //the answer was right
						$questionScore+=$answerWeighting;
						$totalScore+=$answerWeighting;
					}
					break;
			// for hotspot with fixed order
			case HOT_SPOT_ORDER :
					$studentChoice=$choice['order'][$answerId];

					if($studentChoice == $answerId)
					{
						$questionScore+=$answerWeighting;
						$totalScore+=$answerWeighting;
						$studentChoice = true;
					}
					else
					{
						$studentChoice = false;
					}

					break;
		} // end switch Answertype

		//display answers (if not matching type, or if the answer is correct)
		if ($answerType != MATCHING || $answerCorrect) {
			if ($answerType == UNIQUE_ANSWER || $answerType == MULTIPLE_ANSWER || $answerType == MULTIPLE_ANSWER_COMBINATION) {
				if ($origin!='learnpath') {
					display_unique_or_multiple_answer($answerType, $studentChoice, $answer, $answerComment, $answerCorrect);
				}
			} elseif($answerType == FILL_IN_BLANKS) {
				if ($origin!='learnpath') {
					display_fill_in_blanks_answer($answer);
				}
			} elseif($answerType == FREE_ANSWER) {
				// to store the details of open questions in an array to be used in mail

				$arrques[] = $questionName;
				$arrans[]  = $choice;


				if($origin != 'learnpath') {
					display_free_answer($choice);
				}

			}
			elseif($answerType == HOT_SPOT)
			{
				if ($origin != 'learnpath') {
					display_hotspot_answer($answerId, $answer, $studentChoice, $answerComment);
				}
			}
			elseif($answerType == HOT_SPOT_ORDER)
			{
				display_hotspot_order_answer($answerId, $answer, $studentChoice, $answerComment);
			}
			elseif($answerType==MATCHING)
			{
				if ($origin != 'learnpath') {
					echo '<tr>';
					echo '<td>'.api_parse_tex($answer_matching[$answerId]).'</td><td>'.api_parse_tex($user_answer).' / <b><span style="color: #008000;">'.api_parse_tex($answer_matching[$answerCorrect]).'</span></b></td>';
					echo '</tr>';
				}
			}
		}
	} // end for that loops over all answers of the current question

	//
	if ($answerType == MULTIPLE_ANSWER_COMBINATION) {
		$final_answer = true;
	 	foreach($real_answers as $my_answer) {
	 		if (!$my_answer) {
	 			$final_answer = false;
	 		}
	 	}
	 	if ($final_answer) {
	 		//getting only the first score where we save the weight of all the question
	 		$answerWeighting=$objAnswerTmp->selectWeighting(1);
			$questionScore+=$answerWeighting;
			$totalScore+=$answerWeighting;
		}
	}

	// if answer is hotspot. To the difference of exercise_show.php, we use the results from the session (from_db=0)
	// TODO Change this, because it is wrong to show the user some results that haven't been stored in the database yet
	if ($answerType == HOT_SPOT || $answerType == HOT_SPOT_ORDER) {
			// We made an extra table for the answers
			if($origin != 'learnpath') {
			echo "</table></td></tr>";	//echo Security::remove_XSS($questionId);
			?>

			<tr>
				<td colspan="2">
					<i><?php echo get_lang('Hotspot'); ?></i><br /><br />
					<object type="application/x-shockwave-flash" data="../plugin/hotspot/hotspot_solution.swf?modifyAnswers=<?php echo Security::remove_XSS($questionId); ?>&exe_id=&from_db=0" width="552" height="352">
						<param name="movie" value="../plugin/hotspot/hotspot_solution.swf?modifyAnswers=<?php echo Security::remove_XSS($questionId); ?>&exe_id=&from_db=0" />
					</object>
				</td>
			</tr>
			<?php
			}
		}
	?>
	<?php if($origin != 'learnpath') { ?>
		<tr>
		<td colspan="<?php echo $colspan; ?>" align="left">
			<b>
			<?php
			if($questionScore==-1){
				echo get_lang('Score').": 0 /".float_format($questionWeighting);
			} else {
				echo get_lang('Score').": ".float_format($questionScore,1)."/".float_format($questionWeighting,1);
			}
			?></b><br /><br />
		</td>
		</tr>
		</table>
		<?php } ?>
	<?php
	// destruction of Answer
	unset($objAnswerTmp);

	$i++;

	$totalWeighting+=$questionWeighting;
	//added by priya saini
	if($_configuration['tracking_enabled']) {
		if(empty($choice)){
			$choice = 0;
		}
		if ($answerType==MULTIPLE_ANSWER ) {
			if ($choice != 0) {
				$reply = array_keys($choice);
				for ($i=0;$i<sizeof($reply);$i++) {
					$ans = $reply[$i];
					exercise_attempt($questionScore,$ans,$quesId,$exeId,$i);
				}
			} else {
				exercise_attempt($questionScore, 0 ,$quesId,$exeId,0);
			}
		} elseif ($answerType==MULTIPLE_ANSWER_COMBINATION ) {
			if ($choice != 0) {
				$reply = array_keys($choice);
				for ($i=0;$i<sizeof($reply);$i++) {
					$ans = $reply[$i];
					exercise_attempt($questionScore,$ans,$quesId,$exeId,$i);
				}
			} else {
				exercise_attempt($questionScore, 0 ,$quesId,$exeId,0);
			}
		} elseif ($answerType==MATCHING) {
			foreach ($matching as $j => $val) {
				exercise_attempt($questionScore, $val, $quesId, $exeId, $j);
			}
		}
		elseif ($answerType==FREE_ANSWER) {
			$answer = $choice;
			exercise_attempt($questionScore,$answer,$quesId,$exeId,0);
		}
		elseif ($answerType==UNIQUE_ANSWER) {
			// exercise_attempt($questionScore,$answer,$quesId,$exeId,0);
			// In fact, we are not storing the results by answer ID, but by *position*, which is stored in $choice
			exercise_attempt($questionScore,$choice,$quesId,$exeId,0);
		} elseif ($answerType == HOT_SPOT) {
			exercise_attempt($questionScore, $answer, $quesId, $exeId, 0);
			if (is_array($exerciseResultCoordinates[$quesId])) {
				foreach($exerciseResultCoordinates[$quesId] as $idx => $val) {
					exercise_attempt_hotspot($exeId,$quesId,$idx,$choice[$idx],$val);
				}
			}
		} else {
			exercise_attempt($questionScore,$answer,$quesId,$exeId,0);
		}
	}
} // end huge foreach() block that loops over all questions
?>
<?php if($origin != 'learnpath') { ?>
	<table width="100%" border="0" cellpadding="3" cellspacing="2">
	<tr>
	<td>
		<b>
		<?php echo get_lang('YourTotalScore')." ";
		if ($dsp_percent == true) {
		  echo number_format(($totalScore/$totalWeighting)*100,1,'.','')."%";
		} else {
		  echo float_format($totalScore,1)."/".float_format($totalWeighting,1);
		}
		?>
		</b>
	</td>
	</tr>
	<tr>
	<td>
	<br />

		<button type="submit" class="save"><?php echo get_lang('Finish');?></button>

	</td>
	</tr>
	</table>
<?php } ?>
	</form>

	<br /><br />
<?php
if ($origin == 'learnpath') {
	//Display::display_normal_message(get_lang('ExerciseFinished'));
	$lp_mode =  $_SESSION['lp_mode'];
	$url = '../newscorm/lp_controller.php?cidReq='.api_get_course_id().'&action=view&lp_id='.$learnpath_id.'&lp_item_id='.$learnpath_item_id.'&exeId='.$exeId.'&fb_type='.$feedback_type;
	$href = ($lp_mode == 'fullscreen')?' window.opener.location.href="'.$url.'" ':' top.location.href="'.$url.'" ';
	echo '<script language="javascript" type="text/javascript">'.$href.'</script>'."\n";
}
/*
==============================================================================
		Tracking of results
==============================================================================
*/

if ($_configuration['tracking_enabled']) {
	//	Updates the empty exercise
	$safe_lp_id = $learnpath_id==''?0:(int)$learnpath_id;
	$safe_lp_item_id = $learnpath_item_id==''?0:(int)$learnpath_item_id;
	$quizDuration = (!empty($_SESSION['quizStartTime']) ? time() - $_SESSION['quizStartTime'] : 0);
	if (api_is_allowed_to_session_edit() ) {
		update_event_exercice($exeId, $objExercise->selectId(),$totalScore,$totalWeighting,api_get_session_id(),$safe_lp_id,$safe_lp_item_id,$quizDuration);
	}
}

if($objExercise->results_disabled) {
	ob_end_clean();
	if ($origin != 'learnpath') {
		Display :: display_normal_message(get_lang('ExerciseFinished').'<br /><a href="exercice.php" />'.get_lang('Back').'</a>',false);
	} else {
		Display :: display_normal_message(get_lang('ExerciseFinished').'<br /><br />',false);
	}
}

if ($origin != 'learnpath') {
	//we are not in learnpath tool
	Display::display_footer();
} else {
	//record the results in the learning path, using the SCORM interface (API)
	echo '<script language="javascript" type="text/javascript">window.parent.API.void_save_asset('.$totalScore.','.$totalWeighting.');</script>'."\n";
	echo '</body></html>';
}



// Email configuration settings
require_once api_get_path(LIBRARY_PATH).'usermanager.lib.php';
$user_info	= UserManager::get_user_info_by_id(api_get_user_id());

$firstName 	=  $user_info['firstname'];
$lastName 	=  $user_info['lastname'];
$mail 		=  $user_info['email'];
$coursecode = api_get_course_id();
$courseName = $_SESSION['_course']['name'];

$to = '';
$teachers = array();
if(api_get_setting('use_session_mode')=='true' && !empty($_SESSION['id_session'])) {
	$teachers = CourseManager::get_coach_list_from_course_code($coursecode,$_SESSION['id_session']);
} else {
	$teachers = CourseManager::get_teacher_list_from_course_code($coursecode);
}

$num = count($teachers);
if($num>1) {
	$to = array();
	foreach($teachers as $teacher) {
		$to[] = $teacher['email'];
	}
}elseif($num>0){
	foreach($teachers as $teacher) {
		$to = $teacher['email'];
	}
} else {
	//this is a problem (it means that there is no admin for this course)
}


// we are able to send emails to the teachers?
if (api_get_course_setting('email_alert_manager_on_new_quiz') == 1 ) {
	// only for "simple tests"
	if ($origin != 'learnpath') {
		//has a unique answer?
		$mycharset = api_get_system_encoding();
		$msg = '<html><head>
			<link rel="stylesheet" href="'.api_get_path(WEB_CODE_PATH).'css/'.api_get_setting('stylesheets').'/default.css" type="text/css">
			<meta content="text/html; charset='.$mycharset.'" http-equiv="content-type"></head>';

		if(count($arrques)>0) {
			$msg .= '
			<body><br />
			<p>'.get_lang('OpenQuestionsAttempted').' :
			</p>
			<p>'.get_lang('AttemptDetails').' : <br />
			</p>
			<table width="730" height="136" border="0" cellpadding="3" cellspacing="3">
								<tr>
			    <td width="229" valign="top"><h2>&nbsp;&nbsp;'.get_lang('CourseName').'</h2></td>
			    <td width="469" valign="top"><h2>#course#</h2></td>
			  </tr>
			  <tr>
			    <td width="229" valign="top" class="outerframe">&nbsp;&nbsp;'.get_lang('TestAttempted').'</span></td>
			    <td width="469" valign="top" class="outerframe">#exercise#</td>
			  </tr>
			  <tr>
			    <td valign="top">&nbsp;&nbsp;<span class="style10">'.get_lang('StudentName').'</span></td>
			    '.(api_is_western_name_order() ? '<td valign="top" >#firstName# #lastName#</td>' : '<td valign="top" >#lastName# #firstName#</td>').'
			  </tr>
			  <tr>
			    <td valign="top" >&nbsp;&nbsp;'.get_lang('StudentEmail').' </td>
			    <td valign="top"> #mail#</td>
			</tr></table>
			<p><br />'.get_lang('OpenQuestionsAttemptedAre').' :</p>
			 <table width="730" height="136" border="0" cellpadding="3" cellspacing="3">';

			for($i=0;$i<sizeof($arrques);$i++) {
				  $msg.='
					<tr>
				    <td width="220" valign="top" bgcolor="#E5EDF8">&nbsp;&nbsp;<span class="style10">'.get_lang('Question').'</span></td>
				    <td width="473" valign="top" bgcolor="#F3F3F3"><span class="style16"> #questionName#</span></td>
				  	</tr>
				  	<tr>
				    <td width="220" valign="top" bgcolor="#E5EDF8">&nbsp;&nbsp;<span class="style10">'.get_lang('Answer').' </span></td>
				    <td valign="top" bgcolor="#F3F3F3"><span class="style16"> #answer#</span></td>
				  	</tr>';
					$msg1= str_replace("#exercise#",$exerciseTitle,$msg);
					$msg= str_replace("#firstName#",$firstName,$msg1);
					$msg1= str_replace("#lastName#",$lastName,$msg);
					$msg= str_replace("#mail#",$mail,$msg1);
					$msg1= str_replace("#questionName#",$arrques[$i],$msg);
					$msg= str_replace("#answer#",$arrans[$i],$msg1);
					$msg1= str_replace("#i#",$i,$msg);
					$msg= str_replace("#course#",$courseName,$msg1);
			}

			$msg.='</table><br>
		 			<span class="style16">'.get_lang('ClickToCommentAndGiveFeedback').',<br />
					<a href="#url#">#url#</a></span></body></html>';

			$msg1= str_replace("#url#",$url,$msg);
			$mail_content = $msg1;

			$sender_name = api_get_person_name(api_get_setting('administratorName'), api_get_setting('administratorSurname'), null, PERSON_NAME_EMAIL_ADDRESS);
			$email_admin = api_get_setting('emailAdministrator');

			$subject = get_lang('OpenQuestionsAttempted');
			$result = @api_mail_html('', $to, $subject, $mail_content, $sender_name, $email_admin, array('charset'=>$mycharset));
		} else {
			$msg .= '<body>
			<p>'.get_lang('ExerciseAttempted').' <br />
	    	</p>
			<table width="730" height="136" border="0" cellpadding="3" cellspacing="3">
				<tr>
			    <td width="229" valign="top"><h2>&nbsp;&nbsp;'.get_lang('CourseName').'</h2></td>
			    <td width="469" valign="top"><h2>#course#</h2></td>
			  </tr>
			  <tr>
			    <td width="229" valign="top" class="outerframe">&nbsp;&nbsp;'.get_lang('TestAttempted').'</span></td>
			    <td width="469" valign="top" class="outerframe">#exercise#</td>
			  </tr>
			  <tr>
			    <td valign="top">&nbsp;&nbsp;<span class="style10">'.get_lang('StudentName').'</span></td>
			    '.(api_is_western_name_order() ? '<td valign="top" >#firstName# #lastName#</td>' : '<td valign="top" >#lastName# #firstName#</td>').'
			  </tr>
			  <tr>
			    <td valign="top" >&nbsp;&nbsp;'.get_lang('StudentEmail').' </td>
			    <td valign="top"> #mail#</td>
			</tr></table>';

			$msg= str_replace("#exercise#",$exerciseTitle,$msg);
			$msg= str_replace("#firstName#",$firstName,$msg);
			$msg= str_replace("#lastName#",$lastName,$msg);
			$msg= str_replace("#mail#",$mail,$msg);
			$msg= str_replace("#course#",$courseName,$msg);

			$msg.='<br />
		 			<span class="style16">'.get_lang('ClickToCommentAndGiveFeedback').',<br />
					<a href="#url#">#url#</a></span></body></html>';

			$msg= str_replace("#url#",$url,$msg);
			$mail_content = $msg;

			$sender_name = api_get_person_name(api_get_setting('administratorName'), api_get_setting('administratorSurname'), null, PERSON_NAME_EMAIL_ADDRESS);
			$email_admin = api_get_setting('emailAdministrator');

			$subject = get_lang('ExerciseAttempted');
			$result = @api_mail_html('', $to, $subject, $mail_content, $sender_name, $email_admin, array('charset'=>$mycharset));
		}
	}
}
?>