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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 |
|---|---|
| 739 | |
| 740 | // Pages |
| 741 | $page_rewrite = $this->page_rewrite_rules(); |
| 742 | $page_rewrite = apply_filters('page_rewrite_rules', $page_rewrite); |
| 743 | |
| 744 | // Put them together. |
| 745 | $this->rules = array_merge($robots_rewrite, $default_feeds, $page_rewrite, $root_rewrite, $comments_rewrite, $search_rewrite, $category_rewrite, $author_rewrite, $date_rewrite, $post_rewrite, $this->extra_rules); |
| 746 | |
| 747 | do_action_ref_array('generate_rewrite_rules', array(&$this)); |
| 748 | $this->rules = apply_filters('rewrite_rules_array', $this->rules); |
| 749 | |
| 750 | return $this->rules; |
| 751 | } |
| 752 | |
| 753 | function wp_rewrite_rules() { |
| 754 | $this->rules = get_option('rewrite_rules'); |
| 755 | if ( empty($this->rules) ) { |
| 756 | $this->matches = 'matches'; |
| 757 | $this->rewrite_rules(); |