Menu Adam R Brown

WP hooks navigation: Home/browseActions indexFilters index

Source View: get_{$adjacent}_post_join

To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).

Understanding Source Code

The best way to understand what a hook does is to look at where it occurs in the source code.

Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.

Source View

Line Code
1167                     $posts_in_ex_cats_sql = " AND tt.taxonomy = 'category' AND tt.term_id NOT IN (" . implode($excluded_categories, ',') . ')';
1168                }
1169           }
1170      }
1171
1172      $adjacent = $previous ? 'previous' : 'next';
1173      $op = $previous ? '<' : '>';
1174      $order = $previous ? 'DESC' : 'ASC';
1175
1176      $join  = apply_filters( "get_{$adjacent}_post_join", $join, $in_same_cat, $excluded_categories );
1177      $where = apply_filters( "get_{$adjacent}_post_where", $wpdb->prepare("WHERE p.post_date $op %s AND p.post_type = %s AND p.post_status = 'publish' $posts_in_ex_cats_sql", $current_post_date, $post->post_type), $in_same_cat, $excluded_categories );
1178      $sort  = apply_filters( "get_{$adjacent}_post_sort", "ORDER BY p.post_date $order LIMIT 1" );
1179
1180      $query = "SELECT p.ID FROM $wpdb->posts AS p $join $where $sort";
1181      $query_key = 'adjacent_post_' . md5($query);
1182      $result = wp_cache_get($query_key, 'counts');
1183      if ( false !== $result ) {
1184           if ( $result )
1185                $result = get_post( $result );