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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 |
|---|---|
| 591 | else |
| 592 | $where .= ')'; |
| 593 | } |
| 594 | |
| 595 | if (! $this->is_attachment ) |
| 596 | $where .= ' AND post_status != "attachment"'; |
| 597 | |
| 598 | // Apply filters on where and join prior to paging so that any |
| 599 | // manipulations to them are reflected in the paging by day queries. |
| 600 | $where = apply_filters('posts_where', $where); |
| 601 | $join = apply_filters('posts_join', $join); |
| 602 | |
| 603 | // Paging |
| 604 | if (empty($q['nopaging']) && ! $this->is_single) { |
| 605 | $page = $q['paged']; |
| 606 | if (empty($page)) { |
| 607 | $page = 1; |
| 608 | } |
| 609 | |