Wordpress 3.2

[autoinstalls/wordpress.git] / wp-includes / author-template.php

diff --git a/wp-includes/author-template.php b/wp-includes/author-template.php
index 641b69d46f40af65d441afbd08c35864d608f510..f082fb24c4d173281506c09cac0eed8df7b5168d 100644 (file)
--- a/wp-includes/author-template.php
+++ b/wp-includes/author-template.php
@@ -203,8 +203,10 @@ function the_author_posts_link($deprecated = '') {
                _deprecated_argument( __FUNCTION__, '2.1' );
 
        global $authordata;
+       if ( !is_object( $authordata ) )
+               return false;
        $link = sprintf(
-               '<a href="%1$s" title="%2$s">%3$s</a>',
+               '<a href="%1$s" title="%2$s" rel="author">%3$s</a>',
                get_author_posts_url( $authordata->ID, $authordata->user_nicename ),
                esc_attr( sprintf( __( 'Posts by %s' ), get_the_author() ) ),
                get_the_author()
@@ -366,4 +368,34 @@ function wp_list_authors($args = '') {
        echo $return;
 }
 
+/**
+ * Does this site have more than one author
+ *
+ * Checks to see if more than one author has published posts.
+ *
+ * @since 3.2.0
+ * @return bool Whether or not we have more than one author
+ */
+function is_multi_author() {
+       global $wpdb;
+
+       if ( false === ( $is_multi_author = wp_cache_get('is_multi_author', 'posts') ) ) {
+               $rows = (array) $wpdb->get_col("SELECT DISTINCT post_author FROM $wpdb->posts WHERE post_type = 'post' AND post_status = 'publish' LIMIT 2");
+               $is_multi_author = 1 < count( $rows ) ? 1 : 0;
+               wp_cache_set('is_multi_author', $is_multi_author, 'posts');
+       }
+
+       return (bool) $is_multi_author;
+}
+
+/**
+ * Helper function to clear the cache for number of authors.
+ *
+ * @private
+ */
+function __clear_multi_author_cache() {
+       wp_cache_delete('is_multi_author', 'posts');
+}
+add_action('transition_post_status', '__clear_multi_author_cache');
+
 ?>