Update

cgi-bin/uebung08/list-words.php

@@ -19,7 +19,7 @@ for ($i = 0; $i < count($arr); $i++) {
     $mask = implode(" ", maskWord($arr[$i]));
 echo <<<END
 <tr>
-    <td>$a</td>
+    <td>$arr[$i]</td>
     <td>$transformed</td>
     <td>$mask</td>
 </tr>