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To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )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.
| Line | Code |
|---|---|
| 654 | // Apply post-paging filters on where and join. Only plugins that |
| 655 | // manipulate paging queries should use these hooks. |
| 656 | $where = apply_filters('posts_where_paged', $where); |
| 657 | $groupby = " $wpdb->posts.ID "; |
| 658 | $groupby = apply_filters('posts_groupby', $groupby); |
| 659 | $join = apply_filters('posts_join_paged', $join); |
| 660 | $orderby = "post_" . $q['orderby']; |
| 661 | $orderby = apply_filters('posts_orderby', $orderby); |
| 662 | $request = " SELECT $distinct * FROM $wpdb->posts $join WHERE 1=1" . $where . " GROUP BY " . $groupby . " ORDER BY " . $orderby . " $limits"; |
| 663 | $this->request = apply_filters('posts_request', $request); |
| 664 | |
| 665 | $this->posts = $wpdb->get_results($this->request); |
| 666 | |
| 667 | // Check post status to determine if post should be displayed. |
| 668 | if ( !empty($this->posts) && $this->is_single ) { |
| 669 | $status = get_post_status($this->posts[0]); |
| 670 | if ( ('publish' != $status) && ('static' != $status) ) { |
| 671 | if ( ! (isset($user_ID) && ('' != intval($user_ID))) ) { |
| 672 | // User must be logged in to view unpublished posts. |