From 59b066ef11ee36693652649079b191784583b38b Mon Sep 17 00:00:00 2001
From: Sergey Biryukov <sergeybiryukov.ru@gmail.com>
Date: Fri, 7 Oct 2022 15:46:12 +0000
Subject: [PATCH] Blocks: Avoid extra calls to `realpath()` in block scripts
 and styles registration.

This affects:
* `register_block_script_handle()`
* `register_block_style_handle()`

Both functions set a variable with this code:
{{{
$wpinc_path_norm = wp_normalize_path( realpath( ABSPATH . WPINC ) );
}}}

That value never changes during page load, so we can save it to a static variable. By doing so, we can avoid ~200 calls to `realpath()` and `wp_normalize_path()`, or even more if third-party plugins register scripts or styles.

Follow-up to [52291], [52939], [54290], [54291], [54309], [54327].

Props aristath, mukesh27, SergeyBiryukov.
Fixes #56758.
Built from https://develop.svn.wordpress.org/trunk@54415


git-svn-id: http://core.svn.wordpress.org/trunk@53974 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-includes/blocks.php  | 11 +++++++++--
 wp-includes/version.php |  2 +-
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/wp-includes/blocks.php b/wp-includes/blocks.php
index d6db591bc6..30219f3ca0 100644
--- a/wp-includes/blocks.php
+++ b/wp-includes/blocks.php
@@ -129,7 +129,11 @@ function register_block_script_handle( $metadata, $field_name, $index = 0 ) {
 	}
 
 	// Path needs to be normalized to work in Windows env.
-	$wpinc_path_norm  = wp_normalize_path( realpath( ABSPATH . WPINC ) );
+	static $wpinc_path_norm = '';
+	if ( ! $wpinc_path_norm ) {
+		$wpinc_path_norm = wp_normalize_path( realpath( ABSPATH . WPINC ) );
+	}
+
 	$theme_path_norm  = wp_normalize_path( get_theme_file_path() );
 	$script_path_norm = wp_normalize_path( realpath( dirname( $metadata['file'] ) . '/' . $script_path ) );
 
@@ -182,7 +186,10 @@ function register_block_style_handle( $metadata, $field_name, $index = 0 ) {
 		return false;
 	}
 
-	$wpinc_path_norm = wp_normalize_path( realpath( ABSPATH . WPINC ) );
+	static $wpinc_path_norm = '';
+	if ( ! $wpinc_path_norm ) {
+		$wpinc_path_norm = wp_normalize_path( realpath( ABSPATH . WPINC ) );
+	}
 
 	$is_core_block = isset( $metadata['file'] ) && 0 === strpos( $metadata['file'], $wpinc_path_norm );
 	// Skip registering individual styles for each core block when a bundled version provided.
diff --git a/wp-includes/version.php b/wp-includes/version.php
index f46a6ffb02..6283f568a7 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.1-beta3-54414';
+$wp_version = '6.1-beta3-54415';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.