[svn r18666] Minor - Avoiding warning when dividing with 0 see FS#3685

main/mySpace/index.php

@@ -288,26 +288,27 @@ if($view=='coach' || $view=='drh')
 		$avgResultsToExercises += $avgStudentScore;
 		
 	}
+	$avgTotalProgress = 0;
+	$avgResultsToExercises = 0;
+	$avgCoursesPerStudent = 0;
+	$avgTimeSpent = 0;
+	$nb_assignments = 0;
+	$nb_posts = 0;
+	
+	if ($nbStudents > 0) {
 		// average progress
 		$avgTotalProgress = $avgTotalProgress/$nbStudents;
-	
 		// average results to the tests	
 		$avgResultsToExercises = $avgResultsToExercises/$nbStudents;		
-	
 		// average courses by student
 		$avgCoursesPerStudent = round($totalCourses / $nbStudents,2);		
-	
 		// average time spent on the platform
 		$avgTimeSpent = $totalTimeSpent / $nbStudents;		
-	
 		// average assignments
 		$nb_assignments = $nb_assignments / $nbStudents;		
-	
 		// average posts
 		$nb_posts = $nb_posts / $nbStudents;					
-	
-	
-	 
+	} 
 	 //csv part
 	 if($export_csv)
 	 {