update: fix knowledge access data foreach

app/Http/Controllers/User/KnowledgeController.php

@@ -64,9 +64,11 @@ class KnowledgeController extends Controller
     private function formatAccessData(&$body)
     {
         function getBetween($input, $start, $end){$substr = substr($input, strlen($start)+strpos($input, $start),(strlen($input) - strpos($input, $end))*(-1));return $substr;}
-        $accessData = getBetween($body, '<!--access start-->', '<!--access end-->');
+        while (strpos($body, '<!--access start-->') !== false) {
+            $accessData = '<!--access start-->' . getBetween($body, '<!--access start-->', '<!--access end-->') . '<!--access end-->';
             if ($accessData) {
                 $body = str_replace($accessData, '<div class="v2board-no-access">'. __('You must have a valid subscription to view content in this area') .'</div>', $body);
             }
         }
     }
+}