Feature_1255:

- bug fix : function pwg_db_get_recent_period_expression
- add extra fields for select based on "order by"

git-svn-id: http://piwigo.org/svn/trunk@4387 68402e56-0260-453c-a942-63ccdbb3a9ee

include/functions.inc.php

@@ -32,6 +32,18 @@ include_once( PHPWG_ROOT_PATH .'include/functions_url.inc.php' );
 include_once( PHPWG_ROOT_PATH .'include/functions_plugins.inc.php' );
 
 //----------------------------------------------------------- generic functions
+function get_extra_fiels($order_by_fields) 
+{
+  $fields = str_ireplace(array(' order by ', ' desc', ' asc'), 
+			 array('', '', ''),
+			 $order_by_fields
+			 );
+  if (!empty($fields))
+  {
+    $fields = ','.$fields;
+  }
+  return $fields;
+}
 
 // The function get_moment returns a float value coresponding to the number
 // of seconds since the unix epoch (1st January 1970) and the microseconds