Ticket #14405: is_multi_author_cached.diff

wp-includes/author-template.php

@@ -363 +363 @@
         echo $return;
 }
 
+/**
+ * Does this site have more than one author
+ * 
+ * Checks to see if more than one author has published posts.
+ * 
+ * @return bool Whether or not we have more than one author
+ */
+function is_multi_author() {
+        global $wpdb;
+        
+        if ( ! $author_count = wp_cache_get('author_count', 'posts') ) {
+                $author_count = $wpdb->get_var("SELECT COUNT( DISTINCT post_author )  FROM $wpdb->posts WHERE post_type = 'post' AND post_status = 'publish'");
+                wp_cache_set('author_count', $author_count, 'posts');
+        }
+
+        return $author_count > 1;
+}
+
+/** 
+ * Helper function to clear the cache for number of authors.
+ * 
+ * @private
+ */
+function __clear_multi_author_cache() {
+        wp_cache_delete('author_count', 'posts');
+}
+add_action('transition_post_status', '__clear_multi_author_cache');
+
 ?>