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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 |
|---|---|
| 708 | function post_type_archive_title( $prefix = '', $display = true ) { |
| 709 | if ( ! is_post_type_archive() ) |
| 710 | return; |
| 711 | |
| 712 | $post_type = get_query_var( 'post_type' ); |
| 713 | if ( is_array( $post_type ) ) |
| 714 | $post_type = reset( $post_type ); |
| 715 | |
| 716 | $post_type_obj = get_post_type_object( $post_type ); |
| 717 | $title = apply_filters('post_type_archive_title', $post_type_obj->labels->name ); |
| 718 | |
| 719 | if ( $display ) |
| 720 | echo $prefix . $title; |
| 721 | else |
| 722 | return $prefix . $title; |
| 723 | } |
| 724 | |
| 725 | /** |
| 726 | * Display or retrieve page title for category archive. |