[advancedcontentfilter] Fix PHP Warning: Invalid argument supplied for foreach

diff --git a/advancedcontentfilter/advancedcontentfilter.php b/advancedcontentfilter/advancedcontentfilter.php
index e34d577103f5f7d593dc42672e6a86905fa660a5..993c8b4c1da9d5d403419c2911142080b32e1f78 100644 (file)
--- a/advancedcontentfilter/advancedcontentfilter.php
+++ b/advancedcontentfilter/advancedcontentfilter.php
@@ -118,21 +118,23 @@ function advancedcontentfilter_prepare_body_content_filter(App $a, &$hook_data)
                ));
        }
 
-       foreach($rules as $rule) {
-               try {
-                       $serializedParsedExpression = new ExpressionLanguage\SerializedParsedExpression(
-                               $rule['expression'],
-                               $rule['serialized']
-                       );
-
-                       $found = (bool) $expressionLanguage->evaluate($serializedParsedExpression, $vars);
-               } catch (Exception $e) {
-                       $found = false;
-               }
-
-               if ($found) {
-                       $hook_data['filter_reasons'][] = L10n::t('Filtered by rule: %s', $rule['name']);
-                       break;
+       if ($rules) {
+               foreach($rules as $rule) {
+                       try {
+                               $serializedParsedExpression = new ExpressionLanguage\SerializedParsedExpression(
+                                       $rule['expression'],
+                                       $rule['serialized']
+                               );
+
+                               $found = (bool) $expressionLanguage->evaluate($serializedParsedExpression, $vars);
+                       } catch (Exception $e) {
+                               $found = false;
+                       }
+
+                       if ($found) {
+                               $hook_data['filter_reasons'][] = L10n::t('Filtered by rule: %s', $rule['name']);
+                               break;
+                       }
                }
        }
 }