From ec604f4ae04b8f7ced14fd6ecb2263b350ade2f0 Mon Sep 17 00:00:00 2001
From: spacedmonkey <spacedmonkey@git.wordpress.org>
Date: Wed, 12 Feb 2025 21:50:28 +0000
Subject: [PATCH] Users: Add caching to count_user_posts function

Introduced caching for the `count_user_posts` function to reduce redundant database queries. This ensures better performance by storing and reusing query results when possible. Additionally, sanitized and sorted the `$post_type` array to avoid invalid queries.

Props spacedmonkey, peterwilsoncc, mamaduka, flixos90, johnjamesjacoby, swissspidy, dilip2615, johnregan3, wpgurudev, desrosj, milindmore22, Krstarica, dilipom13.
Fixes #39242.
Built from https://develop.svn.wordpress.org/trunk@59817


git-svn-id: http://core.svn.wordpress.org/trunk@59159 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-includes/user.php    | 14 ++++++++++++--
 wp-includes/version.php |  2 +-
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/wp-includes/user.php b/wp-includes/user.php
index ede1330251..748efa5181 100644
--- a/wp-includes/user.php
+++ b/wp-includes/user.php
@@ -604,9 +604,19 @@ function wp_validate_logged_in_cookie( $user_id ) {
 function count_user_posts( $userid, $post_type = 'post', $public_only = false ) {
 	global $wpdb;
 
-	$where = get_posts_by_author_sql( $post_type, true, $userid, $public_only );
+	$post_type = array_unique( (array) $post_type );
+	sort( $post_type );
 
-	$count = $wpdb->get_var( "SELECT COUNT(*) FROM $wpdb->posts $where" );
+	$where = get_posts_by_author_sql( $post_type, true, $userid, $public_only );
+	$query = "SELECT COUNT(*) FROM $wpdb->posts $where";
+
+	$last_changed = wp_cache_get_last_changed( 'posts' );
+	$cache_key    = 'count_user_posts:' . md5( $query ) . ':' . $last_changed;
+	$count        = wp_cache_get( $cache_key, 'post-queries' );
+	if ( false === $count ) {
+		$count = $wpdb->get_var( $query );
+		wp_cache_set( $cache_key, $count, 'post-queries' );
+	}
 
 	/**
 	 * Filters the number of posts a user has written.
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 1333c73110..f841209279 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.8-alpha-59816';
+$wp_version = '6.8-alpha-59817';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.