Missing break & default

test.php

@@ -28,6 +28,11 @@ switch ($humanChoice)
 
     case 'scissors':
         $humanChoiceItem = new Scissors();
+        break;
+
+    default:
+        exit('Invalid choice!');
+
 }
 
 
@@ -44,6 +49,10 @@ switch ($computerChoice)
 
     case 'scissors':
         $computerChoiceItem = new Scissors();
+        break;
+
+    default:
+        exit('Internal error: Invalid computer choice.');
 }