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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 |
|---|---|
| 612 | $where .= ')'; |
| 613 | } |
| 614 | |
| 615 | if (! $this->is_attachment ) |
| 616 | $where .= " AND post_status != 'attachment'"; |
| 617 | |
| 618 | // Apply filters on where and join prior to paging so that any |
| 619 | // manipulations to them are reflected in the paging by day queries. |
| 620 | $where = apply_filters('posts_where', $where); |
| 621 | $join = apply_filters('posts_join', $join); |
| 622 | |
| 623 | // Paging |
| 624 | if (empty($q['nopaging']) && ! $this->is_single && ! $this->is_page) { |
| 625 | $page = abs(intval($q['paged'])); |
| 626 | if (empty($page)) { |
| 627 | $page = 1; |
| 628 | } |
| 629 | |
| 630 | if (($q['what_to_show'] == 'posts')) { |