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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 |
|---|---|
| 1526 | $page_rewrite = apply_filters('page_rewrite_rules', $page_rewrite); |
| 1527 | |
| 1528 | // Extra permastructs |
| 1529 | foreach ( $this->extra_permastructs as $permastructname => $permastruct ) { |
| 1530 | if ( is_array($permastruct) ) |
| 1531 | $rules = $this->generate_rewrite_rules($permastruct[0], $permastruct[1]); |
| 1532 | else |
| 1533 | $rules = $this->generate_rewrite_rules($permastruct, EP_NONE); |
| 1534 | |
| 1535 | $rules = apply_filters($permastructname . '_rewrite_rules', $rules); |
| 1536 | if ( 'post_tag' == $permastructname ) |
| 1537 | $rules = apply_filters('tag_rewrite_rules', $rules); |
| 1538 | |
| 1539 | $this->extra_rules_top = array_merge($this->extra_rules_top, $rules); |
| 1540 | } |
| 1541 | |
| 1542 | // Put them together. |
| 1543 | if ( $this->use_verbose_page_rules ) |
| 1544 | $this->rules = array_merge($this->extra_rules_top, $robots_rewrite, $old_feed_files, $registration_pages, $root_rewrite, $comments_rewrite, $search_rewrite, $author_rewrite, $date_rewrite, $page_rewrite, $post_rewrite, $this->extra_rules); |