Update

cgi-bin/uebung09/questions-edit.php

@@ -41,7 +41,7 @@ echo <<<END
     <div class="form-box">
 END;
 
-        if ($sol == 0) {
+        if ($sol == 1) {
                 //checked
                 echo('<input class="form-solution" type="radio" name="solution" value="1" required checked >');
         } else {
@@ -57,7 +57,7 @@ echo <<<END
     <div class="form-box">
 END;
         
-        if ($sol == 0) {
+        if ($sol == 2) {
                 //checked
                 echo('<input class="form-solution" type="radio" name="solution" value="2" required checked >');
         } else {