Changeset 56457

Timestamp:

08/24/2023 07:57:15 PM (8 months ago)

Author:

davidbaumwald

Message:

Editor: Optimize wp_get_block_css_selector to remove array_merge calls for better performance.

Some block themes like TT3 use wp_get_block_css_selector to determine a CSS selector based on block type and other parameters. However, recent performance profiling indicated a bottleneck in wp_get_block_css_selector, particularly sections that utilize array_merge. By slightly refactoring these sections, array_merge calls can be avoided which increases performance.

Props mukesh27, joemcgill, daxelrod, tabrisrp.
Fixes #59178.

File:

• trunk/src/wp-includes/global-styles-and-settings.php (modified) (2 diffs)

trunk/src/wp-includes/global-styles-and-settings.php

@@ -540 +540 @@
         if ( $has_selectors ) {
             // Look for selector under `feature.root`.
-            $path             = array_merge( $target, array( 'root' ) );
+            $path             = array( current( $target ), 'root' );
             $feature_selector = _wp_array_get( $block_type->selectors, $path, null );
 
@@ -554 +554 @@
 
         // Try getting old experimental supports selector value.
-        $path             = array_merge( $target, array( '__experimentalSelector' ) );
+        $path             = array( current( $target ), '__experimentalSelector' );
         $feature_selector = _wp_array_get( $block_type->supports, $path, null );