Ticket #19225: better-attachment-url-backfilling.3.diff

wordpress-importer.php

@@ -950 +950 @@
          */
         function backfill_attachment_urls() {
                 global $wpdb;
-                // make sure we do the longest urls first, in case one is a substring of another
-                uksort( $this->url_remap, array(&$this, 'cmpr_strlen') );
-
+                $replacements = $post_contents = array();
                 foreach ( $this->url_remap as $from_url => $to_url ) {
-                        // remap urls in post_content
-                        $wpdb->query( $wpdb->prepare("UPDATE {$wpdb->posts} SET post_content = REPLACE(post_content, %s, %s)", $from_url, $to_url) );
-                        // remap enclosure urls
                         $result = $wpdb->query( $wpdb->prepare("UPDATE {$wpdb->postmeta} SET meta_value = REPLACE(meta_value, %s, %s) WHERE meta_key='enclosure'", $from_url, $to_url) );
+                        
+                        $posts = $wpdb->get_results( $wpdb->prepare( "SELECT ID, post_content FROM {$wpdb->posts} WHERE post_content LIKE %s", '%' . like_escape( $from_url ) . '%' ) );
+                        if ( count( $posts ) >  0 ) {
+                                foreach ( $posts as $post ) {
+                                        $replacements[$post->ID][$from_url] = $to_url;
+                                        $post_contents[$post->ID] = $post->post_content;
+                                }
+                        }
+                        unset( $posts );
+                }
+                foreach( $replacements as $post_id => $post_replacements ) {
+                        // make sure we do the longest urls first, in case one is a substring of another
+                        uksort( $post_replacements, array(&$this, 'cmpr_strlen') );
+                        $new_post_content = str_replace( array_keys( $post_replacements ), array_values( $post_replacements ), $post_contents[$post_id] );
+                        if ( $new_post_content <> $post_contents[$post_id] )
+                                $wpdb->update( $wpdb->posts, array( 'post_content' => $new_post_content ), array( 'ID' => $post_id ) );
                 }
         }