Fixed PHP warning if JSON configuration is unreadable or empty. Fixes #3

2 files changed, 6 insertions, 1 deletions

diff --git a/README.md b/README.md
index d794093..ed7365b 100644
--- a/README.md
+++ b/README.md
@@ -84,7 +84,7 @@ To test your XPath expressions, you can use these Chrome extensions:
 
 Some XPath expressions you could need (the `//` is automatically prepended and must be omitted in the FeedMod configuration):
 
-##### HTML5 <article> tag
+##### HTML5 &lt;article&gt; tag
 
 ```html
 <article>…article…</article>
diff --git a/init.php b/init.php
index ddfde29..8922a40 100644
--- a/init.php
+++ b/init.php
@@ -52,6 +52,11 @@ class Af_Feedmod extends Plugin implements IHandler
         $owner_uid = $article['owner_uid'];
         $data = json_decode($json_conf, true);
 
+        if (!is_array($data)) {
+            // no valid JSON or no configuration at all
+            return $article;
+        }
+
         foreach ($data as $urlpart=>$config) {
             if (strpos($article['link'], $urlpart) === false) continue;   // skip this config if URL not matching
             if (strpos($article['plugin_data'], "feedmod,$owner_uid:") !== false) {