feature 280: Allow visitors/users to choose image ordering inside a category

improvement 82: Viewing pictures from remote galleries does not check anymore 
for the high pictures (existence flag added to create_listing_file and db)

correction: link element in picture is in the head instead of body (w3c spec)

correction: in profile.php the current template was not selected by default

git-svn-id: http://piwigo.org/svn/trunk@1020 68402e56-0260-453c-a942-63ccdbb3a9ee

include/functions.inc.php

@@ -533,6 +533,15 @@ function get_query_string_diff($rejects = array())
   return $query_string;
 }
 
+function url_is_remote($url)
+{
+  if (preg_match('/^https?:\/\/[~\/\.\w-]+$/', $url))
+  {
+    return true;
+  }
+  return false;
+}
+
 /**
  * returns available templates/themes
  */