avoid error messages if $_SESSION['selected_tags'] is set with an empty value in photo index view

git-svn-id: file:///var/lib/svn/phpfspot/trunk@138 fa6a889d-dae6-447d-9e79-4ba9a3039384

1 files changed, 6 insertions, 3 deletions

diff --git a/phpfspot.class.php b/phpfspot.class.php
index e052f3c..13517f2 100644
--- a/phpfspot.class.php
+++ b/phpfspot.class.php
@@ -436,9 +436,12 @@ class PHPFSPOT {
       }
 
       $current_tags = "";
-      foreach($_SESSION['selected_tags'] as $tag)
-         $current_tags.= $tag .",";
-      $current_tags = substr($current_tags, 0, strlen($current_tags)-1);
+      if($_SESSION['selected_tags'] != "") {
+         foreach($_SESSION['selected_tags'] as $tag)
+            $current_tags.= $tag .",";
+         $current_tags = substr($current_tags, 0, strlen($current_tags)-1);
+      }
+
       $extern_link = "http://". $_SERVER['SERVER_NAME'] ."/index.php?mode=showpi&tags=". $current_tags;
 
       $this->tmpl->assign('extern_link', $extern_link);