Minor - avoid a few warnings by converting var to public in classes definition

main/exercice/answer.class.php

@@ -13,31 +13,31 @@ if(!class_exists('Answer')):
 
 class Answer
 {
-	var $questionId;
+	public $questionId;
 
 	// these are arrays
-	var $answer;
-	var $correct;
-	var $comment;
-	var $weighting;
-	var $position;
-	var $hotspot_coordinates;
-	var $hotspot_type;
-	var $destination;
+	public $answer;
+	public $correct;
+	public $comment;
+	public $weighting;
+	public $position;
+	public $hotspot_coordinates;
+	public $hotspot_type;
+	public $destination;
 
 	// these arrays are used to save temporarily new answers
 	// then they are moved into the arrays above or deleted in the event of cancellation
-	var $new_answer;
-	var $new_correct;
-	var $new_comment;
-	var $new_weighting;
-	var $new_position;
-	var $new_hotspot_coordinates;
-	var $new_hotspot_type;
-
-	var $nbrAnswers;
-	var $new_nbrAnswers;
-	var $new_destination; // id of the next question if feedback option is set to Directfeedback
+	public $new_answer;
+	public $new_correct;
+	public $new_comment;
+	public $new_weighting;
+	public $new_position;
+	public $new_hotspot_coordinates;
+	public $new_hotspot_type;
+
+	public $nbrAnswers;
+	public $new_nbrAnswers;
+	public $new_destination; // id of the next question if feedback option is set to Directfeedback
 
 /**
 	 * constructor of the class

main/exercice/exercise.class.php

@@ -18,22 +18,22 @@ if(!class_exists('Exercise')):
 
 class Exercise
 {
-	var $id;
-	var $exercise;
-	var $description;
-	var $sound;
-	var $type;
-	var $random;
-	var $random_answers;
-	var $active;
-	var $timeLimit;
-	var $attempts;
-	var $feedbacktype;
-	var $end_time;
-  	var $start_time;
-	var $questionList;  // array with the list of this exercise's questions
-	var $results_disabled;
-  	var $expired_time;
+	public $id;
+	public $exercise;
+	public $description;
+	public $sound;
+	public $type;
+	public $random;
+	public $random_answers;
+	public $active;
+	public $timeLimit;
+	public $attempts;
+	public $feedbacktype;
+	public $end_time;
+  	public $start_time;
+	public $questionList;  // array with the list of this exercise's questions
+	public $results_disabled;
+  	public $expired_time;
 	/**
 	 * constructor of the class
 	 *

main/exercice/question.class.php

@@ -32,15 +32,15 @@ define('MULTIPLE_ANSWER_COMBINATION', 	9);
  */
 abstract class Question
 {
-	var $id;
-	var $question;
-	var $description;
-	var $weighting;
-	var $position;
-	var $type;
-	var $level;
-	var $picture;
-	var $exerciseList;  // array with the list of exercises which this question is in
+	public $id;
+	public $question;
+	public $description;
+	public $weighting;
+	public $position;
+	public $type;
+	public $level;
+	public $picture;
+	public $exerciseList;  // array with the list of exercises which this question is in
 	private $isContent;
 	
 	static $typePicture = 'new_question.png';