Changeset 57153 for trunk/src/wp-includes/theme.php

Timestamp:

12/04/2023 07:36:27 PM (9 months ago)

Author:

flixos90

Message:

Themes: Avoid autoloading the previous theme's theme mods when switching to another theme.

This reduces unnecessarily autoloaded data from inactive themes, which can contribute to slow database performance as part of excessive autoloading.

Props mukesh27, rajinsharwar, igmoweb, joemcgill, swissspidy, westonruter, flixos90.
Fixes #59537.
See #59975.

File:

• trunk/src/wp-includes/theme.php (modified) (1 diff)

trunk/src/wp-includes/theme.php

@@ -840 +840 @@
     $new_theme->delete_pattern_cache();
     $old_theme->delete_pattern_cache();
+
+    // Set autoload=no for the old theme, autoload=yes for the switched theme.
+    $theme_mods_options = array(
+        'theme_mods_' . $stylesheet                  => 'yes',
+        'theme_mods_' . $old_theme->get_stylesheet() => 'no',
+    );
+    wp_set_option_autoload_values( $theme_mods_options );
 
     /**