Minor - fix php notices, clean php code, flint fixes

main/exercise/MultipleAnswerTrueFalseDegreeCertainty.php

@@ -771,9 +771,24 @@ class MultipleAnswerTrueFalseDegreeCertainty extends Question
             .'</th><tr>'
         ;
 
-        $nbResponsesInc = (isset($scoreList[4]) || isset($scoreList[5])) ? $scoreList[4] + $scoreList[5] : 0;
-        $nbResponsesIng = (isset($scoreList[3])) ? $scoreList[3] : 0;
-        $nbResponsesCor = (isset($scoreList[1]) || isset($scoreList[2])) ? $scoreList[1] + $scoreList[2] : 0;
+        $nbResponsesInc = 0;
+        if (isset($scoreList[4])) {
+            $nbResponsesInc += (int) $scoreList[4];
+        }
+        if (isset($scoreList[5])) {
+            $nbResponsesInc += (int) $scoreList[5];
+        }
+
+        $nbResponsesIng = isset($scoreList[3]) ? $scoreList[3] : 0;
+
+        $nbResponsesCor = 0;
+        if (isset($scoreList[1])) {
+            $nbResponsesCor += (int) $scoreList[1];
+        }
+        if (isset($scoreList[2])) {
+            $nbResponsesCor += (int) $scoreList[2];
+        }
+
         $colWidth = $widthTable / 5;
 
         $html .= '<tr>

main/inc/lib/exercise_show_functions.lib.php

@@ -585,7 +585,6 @@ class ExerciseShowFunctions
                 echo '<span style="font-weight: bold; color: '.$color.';">'.nl2br($answerComment).'</span>';
             }
             echo '</td>';
-
         } else {
             echo '<td>&nbsp;</td>';
         }