Added $wgMaxBacklinksInvalidate to avoid massive html cache invalidation.

[lhc/web/wiklou.git] / includes / Export.php

diff --git a/includes/Export.php b/includes/Export.php
index 45a5366..16c297e 100644 (file)
--- a/includes/Export.php
+++ b/includes/Export.php
@@ -427,10 +427,10 @@ class WikiExporter {
        protected function outputPageStream( $resultset ) {
                $last = null;
                foreach ( $resultset as $row ) {
-                       if ( is_null( $last ) ||
+                       if ( $last === null ||
                                $last->page_namespace != $row->page_namespace ||
                                $last->page_title     != $row->page_title ) {
-                               if ( isset( $last ) ) {
+                               if ( $last !== null ) {
                                        $output = '';
                                        if ( $this->dumpUploads ) {
                                                $output .= $this->writer->writeUploads( $last, $this->dumpUploadFileContents );
@@ -445,7 +445,7 @@ class WikiExporter {
                        $output = $this->writer->writeRevision( $row );
                        $this->sink->writeRevision( $row, $output );
                }
-               if ( isset( $last ) ) {
+               if ( $last !== null ) {
                        $output = '';
                        if ( $this->dumpUploads ) {
                                $output .= $this->writer->writeUploads( $last, $this->dumpUploadFileContents );