Source View: posts_request

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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
2244                $groupby = 'GROUP BY ' . $groupby;
2245           if ( !empty( $orderby ) )
2246                $orderby = 'ORDER BY ' . $orderby;
2247           $found_rows = '';
2248           if ( !empty($limits) )
2249                $found_rows = 'SQL_CALC_FOUND_ROWS';
2250
2251           $this->request = " SELECT $found_rows $distinct $fields FROM $wpdb->posts $join WHERE 1=1 $where $groupby $orderby $limits";
2252           if ( !$q['suppress_filters'] )
2253                $this->request = apply_filters('posts_request', $this->request);
2254
2255           $this->posts = $wpdb->get_results($this->request);
2256           // Raw results filter.  Prior to status checks.
2257           if ( !$q['suppress_filters'] )
2258                $this->posts = apply_filters('posts_results', $this->posts);
2259
2260           if ( !empty($this->posts) && $this->is_comment_feed && $this->is_singular ) {
2261                $cjoin = apply_filters('comment_feed_join', '');
2262                $cwhere = apply_filters('comment_feed_where', "WHERE comment_post_ID = '{$this->posts[0]->ID}' AND comment_approved = '1'");