Ticket #4990: get_posts_cats.diff

wp-includes/post.php

@@ -195 +195 @@
 
         $defaults = array(
                 'numberposts' => 5, 'offset' => 0,
-                'category' => 0, 'orderby' => 'post_date',
+                'category' => '', 'orderby' => 'post_date',
                 'order' => 'DESC', 'include' => '',
                 'exclude' => '', 'meta_key' => '',
                 'meta_value' =>'', 'post_type' => 'post',
@@ -207 +207 @@
 
         $numberposts = (int) $numberposts;
         $offset = (int) $offset;
-        $category = (int) $category;
         $post_parent = (int) $post_parent;
 
+        foreach( (array) preg_split('/[,\s]+/', $category) as $cat ) {
+                $cat = intval($cat);
+                $cat = abs($cat);
+                $cat_array[] = $cat;
+        }
+        $category = "'" . implode("', '", $cat_array) . "'";
+
         $inclusions = '';
         if ( !empty($include) ) {
                 $offset = 0;    //ignore offset, category, exclude, meta_key, and meta_value, post_parent if using include
@@ -254 +260 @@
         $query .= empty( $post_type ) ? '' : "AND post_type = '$post_type' ";
         $query .= empty( $post_status ) ? '' : "AND post_status = '$post_status' ";
         $query .= "$exclusions $inclusions " ;
-        $query .= empty( $category ) ? '' : "AND ($wpdb->posts.ID = $wpdb->term_relationships.object_id AND $wpdb->term_relationships.term_taxonomy_id = $wpdb->term_taxonomy.term_taxonomy_id AND $wpdb->term_taxonomy.term_id = " . $category. ") ";
+        $query .= empty( $category ) ? '' : "AND ($wpdb->posts.ID = $wpdb->term_relationships.object_id AND $wpdb->term_relationships.term_taxonomy_id = $wpdb->term_taxonomy.term_taxonomy_id AND $wpdb->term_taxonomy.term_id IN ($category) ) ";
         $query .= empty( $post_parent ) ? '' : "AND $wpdb->posts.post_parent = '$post_parent' ";
         $query .= empty( $meta_key ) | empty($meta_value)  ? '' : " AND ($wpdb->posts.ID = $wpdb->postmeta.post_id AND $wpdb->postmeta.meta_key = '$meta_key' AND $wpdb->postmeta.meta_value = '$meta_value' )";
         $query .= " GROUP BY $wpdb->posts.ID ORDER BY " . $orderby . ' ' . $order;