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Source View: posts_fields

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.

  • Action hooks look like this: do_action( "hook_name" )
  • Filter hooks look like this: apply_filters( "hook_name", "what_to_filter" ).

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
1248           $where = apply_filters('posts_where_paged', $where);
1249           $groupby = apply_filters('posts_groupby', $groupby);
1250           if ( ! empty($groupby) )
1251                $groupby = 'GROUP BY ' . $groupby;
1252           $join = apply_filters('posts_join_paged', $join);
1253           $orderby = apply_filters('posts_orderby', $q['orderby']);
1254           if ( !empty( $orderby ) )
1255                $orderby = 'ORDER BY ' . $orderby;
1256           $distinct = apply_filters('posts_distinct', $distinct);
1257           $fields = apply_filters('posts_fields', "$wpdb->posts.*");
1258           $limits = apply_filters( 'post_limits', $limits );
1259           $found_rows = '';
1260           if ( !empty($limits) )
1261                $found_rows = 'SQL_CALC_FOUND_ROWS';
1262
1263           $request = " SELECT $found_rows $distinct $fields FROM $wpdb->posts $join WHERE 1=1 $where $groupby $orderby $limits";
1264           $this->request = apply_filters('posts_request', $request);
1265
1266           $this->posts = $wpdb->get_results($this->request);