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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 |
|---|---|
| 743 | } else { |
| 744 | $menu_item->type_label = $menu_item->object; |
| 745 | $menu_item->_invalid = true; |
| 746 | } |
| 747 | |
| 748 | $menu_item->url = get_permalink( $menu_item->object_id ); |
| 749 | |
| 750 | $original_object = get_post( $menu_item->object_id ); |
| 751 | /** This filter is documented in wp-includes/post-template.php */ |
| 752 | $original_title = apply_filters( 'the_title', $original_object->post_title, $original_object->ID ); |
| 753 | |
| 754 | if ( '' === $original_title ) { |
| 755 | /* translators: %d: ID of a post */ |
| 756 | $original_title = sprintf( __( '#%d (no title)' ), $original_object->ID ); |
| 757 | } |
| 758 | |
| 759 | $menu_item->title = '' == $menu_item->post_title ? $original_title : $menu_item->post_title; |
| 760 | |
| 761 | } elseif ( 'post_type_archive' == $menu_item->type ) { |