Update

cgi-bin/uebung08/hangman_lib.php

@@ -40,7 +40,7 @@ function maskWord($word) {
 }
 
 function getAllWords() {
-    return array(include("words-array.php"));
+    return include("words-array.php");
 }
 
 

cgi-bin/uebung08/list-words.php

@@ -14,9 +14,9 @@ echo <<<END
   </tr>
 END;
 
-foreach ((array)$arr as $a) {
-    $transformed = transformWord($a);
-    $mask = implode(" ", maskWord($a));
+for ($i = 0; $i < count($arr); $i++) {
+    $transformed = transformWord($arr[$i]);
+    $mask = implode(" ", maskWord($arr[$i]));
 echo <<<END
 <tr>
     <td>$a</td>