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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 |
|---|---|
| 656 | * @param string $prefix Optional. What to display before the title. |
| 657 | * @param bool $display Optional, default is true. Whether to display or retrieve title. |
| 658 | * @return string|null Title when retrieving, null when displaying or failure. |
| 659 | */ |
| 660 | function post_type_archive_title( $prefix = '', $display = true ) { |
| 661 | if ( ! is_post_type_archive() ) |
| 662 | return; |
| 663 | |
| 664 | $post_type_obj = get_queried_object(); |
| 665 | $title = apply_filters('post_type_archive_title', $post_type_obj->labels->name ); |
| 666 | |
| 667 | if ( $display ) |
| 668 | echo $prefix . $title; |
| 669 | else |
| 670 | return $title; |
| 671 | } |
| 672 | |
| 673 | /** |
| 674 | * Display or retrieve page title for category archive. |