Ticket #39242: 39242.2.diff

src/wp-includes/user.php

@@ -372 +372 @@
 
         $where = get_posts_by_author_sql( $post_type, true, $userid, $public_only );
 
-        $count = $wpdb->get_var( "SELECT COUNT(*) FROM $wpdb->posts $where" );
+        $cache_key = "count_user_{$post_type}_{$userid}";
+
+        if ( $public_only ) {
+                $cache_group = 'user_posts_count_public';
+        } else {
+                $cache_group = 'user_posts_count';
+        }
+
+        $count = wp_cache_get( $cache_key, $cache_group );
+
+        if ( false === $count ) {
+                $count = $wpdb->get_var( "SELECT COUNT(*) FROM $wpdb->posts $where" );
+                wp_cache_add( $cache_key, $count, $cache_group );
+        }
 
         /**
          * Filters the number of posts a user has written.
@@ -409 +422 @@
                 return $count;
         }
 
-        $userlist = implode( ',', array_map( 'absint', $users ) );
-        $where    = get_posts_by_author_sql( $post_type, true, null, $public_only );
-
-        $result = $wpdb->get_results( "SELECT post_author, COUNT(*) FROM $wpdb->posts $where AND post_author IN ($userlist) GROUP BY post_author", ARRAY_N );
-        foreach ( $result as $row ) {
-                $count[ $row[0] ] = $row[1];
+        foreach ( $users as $user_id ) {
+                $count[ $user_id ] = count_user_posts( $user_id, $post_type, $public_only );
         }
 
         foreach ( $users as $id ) {