Menu Adam R Brown

WP hooks navigation: Home/browseActions indexFilters index

Source View: posts_join_request

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
1425           $fields = apply_filters('posts_fields', "$wpdb->posts.*");
1426           $limits = apply_filters( 'post_limits', $limits );
1427
1428           // Announce current selection parameters.  For use by caching plugins.
1429           do_action( 'posts_selection', $where . $groupby . $orderby . $limits . $join );
1430
1431           // Filter again for the benefit of caching plugins.  Regular plugins should use the hooks above.
1432           $where = apply_filters('posts_where_request', $where);
1433           $groupby = apply_filters('posts_groupby_request', $groupby);
1434           $join = apply_filters('posts_join_request', $join);
1435           $orderby = apply_filters('posts_orderby_request', $orderby);
1436           $distinct = apply_filters('posts_distinct_request', $distinct);
1437           $fields = apply_filters('posts_fields_request', $fields);
1438           $limits = apply_filters( 'post_limits_request', $limits );
1439
1440           if ( ! empty($groupby) )
1441                $groupby = 'GROUP BY ' . $groupby;
1442           if ( !empty( $orderby ) )
1443                $orderby = 'ORDER BY ' . $orderby;