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
1127                     $posts_in_ex_cats_sql = " AND tt.taxonomy = 'category' AND tt.term_id NOT IN (" . implode($excluded_categories, ',') . ')';
1128                }
1129           }
1130      }
1131
1132      $adjacent = $previous ? 'previous' : 'next';
1133      $op = $previous ? '<' : '>';
1134      $order = $previous ? 'DESC' : 'ASC';
1135
1136      $join  = apply_filters( "get_{$adjacent}_post_join", $join, $in_same_cat, $excluded_categories );
1137      $where = apply_filters( "get_{$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 );
1138      $sort  = apply_filters( "get_{$adjacent}_post_sort", "ORDER BY p.post_date $order LIMIT 1" );
1139
1140      $query = "SELECT p.* FROM $wpdb->posts AS p $join $where $sort";
1141      $query_key = 'adjacent_post_' . md5($query);
1142      $result = wp_cache_get($query_key, 'counts');
1143      if ( false !== $result )
1144           return $result;
1145