fix check_issn hook (didn't work when the check digit=0)

OpenEdition · Dec 13, 2018 · 9ba97c2 · 9ba97c2
1 parent f8440b2
commit 9ba97c2
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lodel/scripts/hookfunc.php b/lodel/scripts/hookfunc.php
@@ -73,7 +73,7 @@ function check_issn(&$context, $field, &$errors)
         }
 
         $check %= 11;
-        $check  = 11 - $check;
+        if ($check != 0) $check  = 11 - $check;
 
         if ($check == $checksum || (($check == 10) && ($checksum == 'X'))) {
             $context['data'][$field] = wordwrap($value,4,'-', true);